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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

4-ETHOXY-3-(1-METHYL-7-OXO-3-PROPYL-6,7-DIHYDRO-1H-PYRAZOLO[4,3-D]PYRIMIDIN-5-YL)BENZENE-1-SULFONYL CHLORIDE

Cas:139756-22-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

Sildenafil Chlorosulfonyl

Cas:139756-22-2

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 139756-22-2

Cas:139756-22-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one CAS:139756-22-2 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, productio

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Changchun Artel lmport and Export trade company

Superiority We can customize and synthesize products that other suppliers may not be able to provide. Advantage cof, mof ligand manufacturer Product Detail

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

5-(5-CHLORO SULFONYL-2-ETHOXYPHENYL)-1-METHYL-3-N-PROPYL-1,6-DIHYDRO-7H-PYRAZOLO-[4,3,D]-PYRIMIDINE-7-ONE

Cas:139756-22-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Why Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu

Wuhan Xinhao Biotechnology Co., Ltd.

Our service We have our own research and development team, laboratory, pilot workshop and production plant. Factory produc

Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

5-Chlorosulfonyl-2-ethoxyphenyl)-1- methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]-7-pyrimidinone

Cas:139756-22-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

SAGECHEM LIMITED

SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

Hubei Taiho Chemical Co.,LTD

TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp

Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Cas:139756-22-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-Methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyriMidin-7-one

Cas:139756-22-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

SAGECHEM/ 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride /Manufacturer in China Application:SAGECHEM/ 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benz

HANGZHOU TIANYE CHEMICALS CO., LTD.

We product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:Pharm intermediate

Guangdong Juda Chemical Industrial Co.,Limited

Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China

Synthetic route

5-(2-ethoxy)-phenyl-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidine-7-one
139756-21-1

5-(2-ethoxy)-phenyl-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidine-7-one

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
With chlorosulfonic acid at 0 - 25℃; for 2h;97%
With chlorosulfonic acid In neat (no solvent) at 0 - 20℃; for 12h;95%
With chlorosulfonic acid; thionyl chloride at 0 - 20℃; Sealed tube;92%
ethyl 3-butyrylpyruvate
36983-31-0

ethyl 3-butyrylpyruvate

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 10 steps
1: hydrazine hydrate / acetic acid; 2-methoxy-ethanol / 100 °C
2: caesium carbonate / N,N-dimethyl-formamide / 20 °C
3: hydrogenchloride / water / 100 °C
4: nitric acid; sulfuric acid / 50 °C
5: thionyl chloride / Reflux
6: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
7: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
8: triethylamine / dichloromethane / 20 °C
9: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
10: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 10 steps
1: acetic acid; hydrazine hydrate / 2-methoxy-ethanol / 100 °C
2: caesium carbonate / N,N-dimethyl-formamide / 20 °C
3: hydrogenchloride; water / 100 °C
4: sulfuric acid; nitric acid / 50 °C
5: thionyl chloride / Reflux
6: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
7: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
8: triethylamine / dichloromethane / 20 °C
9: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
10: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
2-Pentanone
107-87-9

2-Pentanone

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 11 steps
1.1: sodium / ethanol / 1 h / 20 °C
1.2: 20 °C
2.1: hydrazine hydrate / acetic acid; 2-methoxy-ethanol / 100 °C
3.1: caesium carbonate / N,N-dimethyl-formamide / 20 °C
4.1: hydrogenchloride / water / 100 °C
5.1: nitric acid; sulfuric acid / 50 °C
6.1: thionyl chloride / Reflux
7.1: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
8.1: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
9.1: triethylamine / dichloromethane / 20 °C
10.1: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
11.1: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 11 steps
1.1: sodium / ethanol / 1 h / 20 °C
1.2: 20 °C
2.1: acetic acid; hydrazine hydrate / 2-methoxy-ethanol / 100 °C
3.1: caesium carbonate / N,N-dimethyl-formamide / 20 °C
4.1: hydrogenchloride; water / 100 °C
5.1: sulfuric acid; nitric acid / 50 °C
6.1: thionyl chloride / Reflux
7.1: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
8.1: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
9.1: triethylamine / dichloromethane / 20 °C
10.1: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
11.1: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
ethyl 3-propyl-1H-pyrazole-5-carboxylate
92945-27-2

ethyl 3-propyl-1H-pyrazole-5-carboxylate

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1: caesium carbonate / N,N-dimethyl-formamide / 20 °C
2: hydrogenchloride / water / 100 °C
3: nitric acid; sulfuric acid / 50 °C
4: thionyl chloride / Reflux
5: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
6: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
7: triethylamine / dichloromethane / 20 °C
8: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
9: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 7 steps
1.1: 9 h / 5 - 25 °C
2.1: sodium hydroxide / 3 h / 75 °C
3.1: sulfuric acid; nitric acid / 8 h / 50 °C
4.1: thionyl chloride / 5 h / Reflux
5.1: iron; ammonium chloride / ethanol; water / 4.5 h / 80 °C
6.1: ethanol / 1.5 h / 70 °C
6.2: 1.5 h / 70 °C
7.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 9 steps
1: caesium carbonate / N,N-dimethyl-formamide / 20 °C
2: hydrogenchloride; water / 100 °C
3: sulfuric acid; nitric acid / 50 °C
4: thionyl chloride / Reflux
5: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
6: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
7: triethylamine / dichloromethane / 20 °C
8: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
9: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
1-Methyl-3-n-propylpyrazole-5-carboxylic acid ethyl ester
133261-07-1

1-Methyl-3-n-propylpyrazole-5-carboxylic acid ethyl ester

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1: hydrogenchloride / water / 100 °C
2: nitric acid; sulfuric acid / 50 °C
3: thionyl chloride / Reflux
4: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
5: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
6: triethylamine / dichloromethane / 20 °C
7: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
8: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 6 steps
1.1: sodium hydroxide / 3 h / 75 °C
2.1: sulfuric acid; nitric acid / 8 h / 50 °C
3.1: thionyl chloride / 5 h / Reflux
4.1: iron; ammonium chloride / ethanol; water / 4.5 h / 80 °C
5.1: ethanol / 1.5 h / 70 °C
5.2: 1.5 h / 70 °C
6.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 8 steps
1: hydrogenchloride; water / 100 °C
2: sulfuric acid; nitric acid / 50 °C
3: thionyl chloride / Reflux
4: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
5: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
6: triethylamine / dichloromethane / 20 °C
7: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
8: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
1-methyl-3-propyl-1 H-pyrazole-5-carboxylic acid
139755-99-0

1-methyl-3-propyl-1 H-pyrazole-5-carboxylic acid

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: nitric acid; sulfuric acid / 50 °C
2: thionyl chloride / Reflux
3: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
4: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
5: triethylamine / dichloromethane / 20 °C
6: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
7: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 5 steps
1.1: sulfuric acid; nitric acid / 8 h / 50 °C
2.1: thionyl chloride / 5 h / Reflux
3.1: iron; ammonium chloride / ethanol; water / 4.5 h / 80 °C
4.1: ethanol / 1.5 h / 70 °C
4.2: 1.5 h / 70 °C
5.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 7 steps
1: sulfuric acid; nitric acid / 50 °C
2: thionyl chloride / Reflux
3: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
4: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
5: triethylamine / dichloromethane / 20 °C
6: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
7: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
1-methyl-2-nitro-3-propyl-1H-pyrazole-5-carboxylic acid
139756-00-6

1-methyl-2-nitro-3-propyl-1H-pyrazole-5-carboxylic acid

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: thionyl chloride / Reflux
2: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
3: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
4: triethylamine / dichloromethane / 20 °C
5: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
6: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 4 steps
1.1: thionyl chloride / 5 h / Reflux
2.1: iron; ammonium chloride / ethanol; water / 4.5 h / 80 °C
3.1: ethanol / 1.5 h / 70 °C
3.2: 1.5 h / 70 °C
4.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 6 steps
1: thionyl chloride / Reflux
2: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
3: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
4: triethylamine / dichloromethane / 20 °C
5: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
6: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
1-methyl-4-nitro-3-propyl-1H-pyrazole-5 carboxamide
139756-01-7

1-methyl-4-nitro-3-propyl-1H-pyrazole-5 carboxamide

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
2: triethylamine / dichloromethane / 20 °C
3: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
4: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 3 steps
1.1: iron; ammonium chloride / ethanol; water / 4.5 h / 80 °C
2.1: ethanol / 1.5 h / 70 °C
2.2: 1.5 h / 70 °C
3.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 4 steps
1: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
2: triethylamine / dichloromethane / 20 °C
3: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
4: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
1-methyl-4-nitro-3-propyl-1H-pyrazole-5-carbonyl chloride
360068-47-9

1-methyl-4-nitro-3-propyl-1H-pyrazole-5-carbonyl chloride

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
2: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
3: triethylamine / dichloromethane / 20 °C
4: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
5: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 5 steps
1: ammonium hydroxide / tetrahydrofuran / 2 h / Cooling with ice
2: palladium on activated charcoal; hydrogen / methanol / 30 °C / 2585.81 Torr
3: triethylamine / dichloromethane / 20 °C
4: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
5: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide
139756-02-8

4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: triethylamine / dichloromethane / 20 °C
2: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
3: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 2 steps
1.1: ethanol / 1.5 h / 70 °C
1.2: 1.5 h / 70 °C
2.1: chlorosulfonic acid / 0 - 5 °C
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / dichloromethane / 20 °C
2: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
3: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
5-(2-ethoxyphenylcarbonylaminocarbonyl)-1-methyl-3-propyl-1H-pyrazol-4-amine

5-(2-ethoxyphenylcarbonylaminocarbonyl)-1-methyl-3-propyl-1H-pyrazol-4-amine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium hydroxide; dihydrogen peroxide / ethanol; water / 100 °C
2: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
Multi-step reaction with 2 steps
1: sodium hydroxide; dihydrogen peroxide / water; ethanol / 100 °C
2: chlorosulfonic acid / 2 h / 20 °C / Cooling with ice
View Scheme
C10H9O4(1-)*K(1+)

C10H9O4(1-)*K(1+)

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: dipotassium peroxodisulfate / acetonitrile / 8 h / 80 °C / Sealed tube; Inert atmosphere
2: chlorosulfonic acid / 0 - 20 °C / Sealed tube
View Scheme
2-ethoxylbenzaldehyde
613-69-4

2-ethoxylbenzaldehyde

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: ethanol / 1.5 h / 70 °C
2: copper dichloride; oxygen / ethanol / 1.5 h / 70 °C
3: chlorosulfonic acid / 0 - 5 °C
View Scheme
C17H22N4O2
845302-49-0

C17H22N4O2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: copper dichloride; oxygen / ethanol / 1.5 h / 70 °C
2: chlorosulfonic acid / 0 - 5 °C
View Scheme
2-ethoxybenzoyl chloride
42926-52-3

2-ethoxybenzoyl chloride

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: triethylamine / dichloromethane / 1.5 h / 20 °C
2: sodium hydroxide / tert-butyl alcohol / 35 h / 80 - 90 °C
3: chlorosulfonic acid / 12 h / 20 - 30 °C
View Scheme
4-[(2-ethoxybenzoyl)amino]-1-methyl-3-propyl-1H-pyrazole-5-carboxamide
139756-03-9

4-[(2-ethoxybenzoyl)amino]-1-methyl-3-propyl-1H-pyrazole-5-carboxamide

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium hydroxide / tert-butyl alcohol / 35 h / 80 - 90 °C
2: chlorosulfonic acid / 12 h / 20 - 30 °C
View Scheme
4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid
1357931-55-5

4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 0℃; for 5h; Inert atmosphere;
viagra
139755-83-2

viagra

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sulfuric acid; water / 41 h / 20 - 100 °C
2: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 5 h / 0 °C / Inert atmosphere
View Scheme
2-(2-ethoxyphenyl)acetic acid
70289-12-2

2-(2-ethoxyphenyl)acetic acid

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: dipotassium peroxodisulfate / water / 12 h / 80 °C / Sealed tube
2: chlorosulfonic acid; thionyl chloride / 0 - 20 °C / Sealed tube
View Scheme
2-Hydroxyphenylacetic acid
614-75-5

2-Hydroxyphenylacetic acid

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium carbonate / acetonitrile / 4 h / 80 °C / Sealed tube
2: dipotassium peroxodisulfate / water / 12 h / 80 °C / Sealed tube
3: chlorosulfonic acid; thionyl chloride / 0 - 20 °C / Sealed tube
View Scheme
1,4-Diazacycloheptane
505-66-8

1,4-Diazacycloheptane

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(5-(1,4-diazepane-1-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
1352238-20-0

5-(5-(1,4-diazepane-1-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
With triethylamine In ethanol at 0 - 10℃; for 1h; Concentration; Inert atmosphere;98%
1-Methylhomopiperazine
4318-37-0

1-Methylhomopiperazine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-[2-ethoxy-5-(4-methyl-1-homopiperazinylsulfonyl)]-phenyl-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo [4,3-d]pyrimidine-7-one
1257393-31-9

5-[2-ethoxy-5-(4-methyl-1-homopiperazinylsulfonyl)]-phenyl-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo [4,3-d]pyrimidine-7-one

Conditions
ConditionsYield
With triethylamine In ethanol at 20℃; for 1h; Concentration; Solvent; Inert atmosphere;97.5%
With N-ethyl-N,N-diisopropylamine In chloroform for 12h; pH=9; Cooling with ice;92.2%
With N-ethyl-N,N-diisopropylamine In chloroform for 12h; pH=9; Cooling with ice;92.2%
2-Ketopiperazine
5625-67-2

2-Ketopiperazine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2-ethoxy-5-((3-oxopiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((3-oxopiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 2-Ketopiperazine With triethylamine In chloroform at 10℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In chloroform at 25℃; for 6h;
95%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;70%
1-methyl-piperazine
109-01-3

1-methyl-piperazine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

viagra
139755-83-2

viagra

Conditions
ConditionsYield
With pyridine In water at 50℃; Reagent/catalyst; Temperature;93.9%
With triethylamine In methanol at 20℃; for 0.75h; Product distribution / selectivity;91%
In acetone at 20℃; for 3h; Sealed tube;90%
piperazine
110-85-0

piperazine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Desmethylsildenafil

Desmethylsildenafil

Conditions
ConditionsYield
In dichloromethane at 20℃; for 2h;93%
In ethanol at 100℃; for 1h; Microwave irradiation;87%
In ethanol at 100℃; for 1h; Microwave irradiation;86.8%
In ethanol at 100℃; for 1h; Microwave irradiation;86.8%
In ethanol at 20℃; for 3h;72.3%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

N-acetylhomopiperizine
61903-11-5

N-acetylhomopiperizine

5-(5-(4-acetyl-1,4-diazepan-1-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
1352238-21-1

5-(5-(4-acetyl-1,4-diazepan-1-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
With triethylamine In ethanol at 20℃; for 1h; Inert atmosphere;93%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

4-(piperazin-1-yl)pyridine
1008-91-9

4-(piperazin-1-yl)pyridine

5-(2-ethoxy-5-((4-(pyridin-4-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-(pyridin-4-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-(piperazin-1-yl)pyridine With triethylamine In chloroform at 10℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In chloroform at 25℃; for 6h;
93%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;70%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

7-chloro-1-methyl-5-[2-ethoxy-5-(chlorosulfonyl)phenyl]-3-n-propyl-1H-pyrazolo[4,3-d]pyrimidine
1033861-31-2

7-chloro-1-methyl-5-[2-ethoxy-5-(chlorosulfonyl)phenyl]-3-n-propyl-1H-pyrazolo[4,3-d]pyrimidine

Conditions
ConditionsYield
With trichlorophosphate at 70 - 80℃; for 2h; Product distribution / selectivity;92%
With trichlorophosphate at 80℃; for 2h; Product distribution / selectivity;92%
With phosphorus pentachloride In benzene at 0 - 90℃; for 2.5h; Product distribution / selectivity;67%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

N-(2-aminoethyl)benzeneamine
1664-40-0

N-(2-aminoethyl)benzeneamine

C25H30N6O4S
1007310-81-7

C25H30N6O4S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;92%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

N-(2-pyridinyl)piperazine
20980-22-7

N-(2-pyridinyl)piperazine

5-(2-ethoxy-5-((4-(pyrimidin-2-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-(pyrimidin-2-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: N-(2-pyridinyl)piperazine With trimethylamine In 1,4-dioxane at 15℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In 1,4-dioxane at 27℃; for 6h;
92%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

azetion-3-ol hydrochloride
18621-18-6

azetion-3-ol hydrochloride

5-(2- ethoxy-5-((3-hydroxyazetidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2- ethoxy-5-((3-hydroxyazetidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 25℃; for 16h;91.81%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-methylpiperazine hydrochloride
34352-59-5, 50398-09-9, 51545-09-6

1-methylpiperazine hydrochloride

viagra
139755-83-2

viagra

Conditions
ConditionsYield
With triethylamine; N-ethyl-N,N-diisopropylamine In water at 60℃; for 1.2h;91.8%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-(2-pyridyl)piperazine
34803-66-2

1-(2-pyridyl)piperazine

5-(2-ethoxy-5-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-(pyridin-2-yl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 1-(2-pyridyl)piperazine With caesium carbonate In N,N-dimethyl-formamide at 15℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In N,N-dimethyl-formamide at 35℃; for 4h;
91%
4-benzylpyperidine
31252-42-3

4-benzylpyperidine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(5-((4-benzylpiperidin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(5-((4-benzylpiperidin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-benzylpyperidine With triethylamine In dichloromethane at 20℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In dichloromethane at 30℃; for 6h;
91%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;70%
cyclohexylpiperazine
17766-28-8

cyclohexylpiperazine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

C27H38N6O4S
1007310-71-5

C27H38N6O4S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;90%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-(o-toluyl)piperazine
39512-51-1

1-(o-toluyl)piperazine

C28H34N6O4S
1007310-64-6

C28H34N6O4S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;90%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-(2-Methoxyphenyl)piperazine
35386-24-4

1-(2-Methoxyphenyl)piperazine

C28H34N6O5S
1007310-58-8

C28H34N6O5S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;90%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-(4-Nitrophenyl)piperazine
6269-89-2

1-(4-Nitrophenyl)piperazine

C27H31N7O6S
1007310-66-8

C27H31N7O6S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;90%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-(o-fluorophenyl)piperazine
1011-15-0

1-(o-fluorophenyl)piperazine

C27H31FN6O4S
1007310-67-9

C27H31FN6O4S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;90%
piperidin-4-one
41661-47-6

piperidin-4-one

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2-ethoxy-5-((4-oxopiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-oxopiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: piperidin-4-one With N-ethyl-N,N-diisopropylamine In dichloromethane at 15℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In dichloromethane at 25℃; for 6h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃; for 6h;90%
4-methoxypiperidine
4045-24-3

4-methoxypiperidine

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2-ethoxy-5-((4-methoxypiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-methoxypiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-methoxypiperidine With potassium carbonate In acetone at 20℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In acetone at 35℃; for 5h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;80%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

4'-piperazinoacetophenone
51639-48-6

4'-piperazinoacetophenone

5-(5-((4-(4-acetylphenyl)piperazin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(5-((4-(4-acetylphenyl)piperazin-1-yl)sulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4'-piperazinoacetophenone With potassium carbonate In acetonitrile at 20℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In acetonitrile at 35℃; for 5h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;65%
4-piperidinopiperidin
4897-50-1

4-piperidinopiperidin

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(5-([1,4’-bipiperidin]-1‘-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(5-([1,4’-bipiperidin]-1‘-ylsulfonyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-piperidinopiperidin With potassium carbonate In acetone at 25℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In acetone at 25℃; for 4.5h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;65%
4-methylpiperidin
626-58-4

4-methylpiperidin

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2-ethoxy-5-((4-methylpiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-methylpiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-methylpiperidin With N-ethyl-N,N-diisopropylamine In 1,2-dichloro-ethane at 20℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In 1,2-dichloro-ethane at 30℃; for 6h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;80%
With triethylamine In chloroform
With triethylamine In chloroform
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

(piperidin-4-yl)carbamic acid tert-butyl ester
73874-95-0

(piperidin-4-yl)carbamic acid tert-butyl ester

tert-butyl (1-((4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)sulfonyl)piperidin-4-yl)carbamate

tert-butyl (1-((4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)sulfonyl)piperidin-4-yl)carbamate

Conditions
ConditionsYield
Stage #1: (piperidin-4-yl)carbamic acid tert-butyl ester With N-ethyl-N,N-diisopropylamine In dichloromethane at 15℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In dichloromethane at 30℃; for 6h;
90%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;75%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid
1357931-55-5

4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid

Conditions
ConditionsYield
With ethanol for 5h; Reagent/catalyst; Reflux;90%
5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

1-naphtylpiperazine
57536-86-4

1-naphtylpiperazine

C31H34N6O4S
1007310-60-2

C31H34N6O4S

Conditions
ConditionsYield
With triethylamine In ethanol at 30℃; for 0.0833333h; microwave irradiation;89%
4-HYDROXYPIPERIDINE
5382-16-1

4-HYDROXYPIPERIDINE

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
139756-22-2

5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

5-(2-ethoxy-5-((4-hydroxypiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

5-(2-ethoxy-5-((4-hydroxypiperidin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one

Conditions
ConditionsYield
Stage #1: 4-HYDROXYPIPERIDINE With N-ethyl-N,N-diisopropylamine In dichloromethane at 15℃; for 0.166667h;
Stage #2: 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one In dichloromethane at 25℃; for 4h;
88%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 15 - 25℃;85%

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