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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

Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Top Quality Praziquantel 99%

Cas:55268-74-1

Min.Order:10 Kilogram

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Type:Trading Company

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HANGZHOU CLAKE BIOTECH CO.,LTD

1. GMP AVALIABLE ; 2. IN STOCK 3. FAST REPLY QUALIFED ; EFFICIENCY; RESPONSIBLE Appearance:WHITE POWDER Storage:in cool Package:25kg/drum / 25kg/bag Application:active pharmaceutical ingredient Transportation:sea/air both ok Port:any

Praziquantel

Cas:55268-74-1

Min.Order:25 Kilogram

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Type:Trading Company

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Appearance A white or almost white crystalline powder White powder Identification

Praziquantel CAS:55268-74-1

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $82.0 / 105.0

Type:Lab/Research institutions

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BOC Sciences

BOC Sciences is committed to supplying cost-effective products and services. We provide Praziquantel (Cas No:55268-74-1). More information, please visit the website:https://www.bocsci.com/description.asp cas=55268-74-1 Package:according to the cli

Praziquantel

Cas:55268-74-1

Min.Order:1 Gram

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Type:Trading Company

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Zhengzhou Yuanli Biological Technology Co., Ltd.

1. Molecular formula: C19H24N2O2 2. Molecular weight: 312.41 3. Packing: 25kg/drum 4. Appearance: white or almost white crystalline powder 5. Melting range: 136-142℃ 6. Annual supply: 10 tons 7. Grade: pharmaceutical grade 8. Loss on drying: 0

Biggest manufacturer of Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

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Type:Lab/Research institutions

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Kono Chem Co.,Ltd

Praziquantel Veterinary CAS Number: 55268-74-1 Molecular Formula: C19H24N2O2 Molecular Weight: 312.41 Packing 25kg/drum Capacity 8-10 T/M Storage Keep tightly closed in light-resistant containers Application Anti-worm. It is adapt

CAS:55268-74-1 Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

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Type:Other

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Wuhan Fortuna Chemical Co.,Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; ...... Appearance:White or almost white crystalline powder Storage:-20°C Pa

Feed additive Praziquantel CAS 55268-74-1 of USP standard

Cas:55268-74-1

Min.Order:10 Kilogram

FOB Price: $150.0

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. Main products are Titanium dioxide(CAS13463-67-7). Lead a

PRAZIQUANTEL

Cas:55268-74-1

Min.Order:1 Metric Ton

FOB Price: $1.0 / 2.0

Type:Manufacturers

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Xi'an Quanao Biotech Co., Ltd.

Xi’an Quanao Biotech Co., Ltd. with 18 years experience in plant extract filed. Product grade: Medicine, Health care product, Cosmetics, Food, Beverage, Feed. Hot selling market: Europe, North America, South America, Middle East, Asia Pacifi

99% Praziquantel bulk powder for tablet cas 55268-74-1

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $69.0 / 89.0

Type:Manufacturers

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Hangzhou Think Chemical Co. Ltd

HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture. With about ten years of business experiences on the marketing & distribution, thinkchem specializes in exp

Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

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Type:Other

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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

Factory Supply Praziquantel

Cas:55268-74-1

Min.Order:1

Negotiable

Type:Other

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Sinoway Industrial Co., Ltd.

Assay: 98.5%~101.0% (USP40); Stable supply with over 20Mt annually; Appearance:White or practically white crystalline powder Storage:room temprature Package:1kg/bag, 25kg/drum Application:Anti-schistosomal; sensory transient receptor potential me

Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $105.0 / 110.0

Type:Trading Company

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

Factory Price API 99% Praziquantel 55268-74-1 GMP Manufacturer

Cas:55268-74-1

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Shandong Jiulong Hisince Pharmaceutical Co.,Ltd.

Items Specification Appearance White crystalline powder Identification Positive Melting Point 136 ~ 142° Loss on Drying ≤ 0.5% Residue on Ignition ≤ 0.1% Heavy Metals ≤ 20ppm Phosphate ≤ 0.05% Related Substances A≤ 0.

praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

Praziquantel

Cas:55268-74-1

Min.Order:1 Metric Ton

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Type:Manufacturers

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Shanxi Zorui Biotechnology Co.Ltd.

Zorui combines R&D, production and sales into its operations, While continuously providing high-quality raw materials, we also provide and optimize technical solutions for customers to achieve mutual benefit. We adhere to the "quality, integ

99% Purity CAS 55268-74-1 Praziquantel for Anti-worm Medication

Cas:55268-74-1

Min.Order:1 Kilogram

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Type:Other

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Chemwill Asia Co., Ltd.

Praziquantel -- CHemwill

Cas:55268-74-1

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Manufacturers

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Hubei DiBo chemical co., LTD

Name:PRAZIQUANTEL CAS NO: 55268-74-1 Grade:Medical scientific research and export Molecular formula:C19H24N2O2 Molecular weight: 312.41 Product Quality 12 years of chemical raw materials Mature operation of the industry System stability

PRAZIQUANTEL / CAS:55268-74-1/ raw material/ high-quality

Cas:55268-74-1

Min.Order:25 Kilogram

FOB Price: $2.0 / 3.0

Type:Other

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Henan Tianfu Chemical Co., Ltd.

Praziquantel Basic information The treatment of schistosomiasis Chemical Properties Application Production method Category Toxicity grading Acute toxicity Flammability and hazardous characteristics Storage Characteristics

TIANFU-CHEM CAS:55268-74-1 Praziquantel

Cas:55268-74-1

Min.Order:1 Gram

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Type:Lab/Research institutions

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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

Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Top Purity CAS 55268-74-1 with fast shipping

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Hubei Vanz Pharm Co.,Ltd

cas 55268-74-1 99% Praziquantel powder Product Name: Praziquantel CAS: 55268-74-1 MF: C19H24N2O2 MW: 312.41 EINECS: 259-559-6 Appearance:white Storage:room Package:drum Applica

cas 55268-74-1 99% Praziquantel powder

Cas:55268-74-1

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd

Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $50.0 / 100.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Name: Praziquantel Synonyms: 2-Cyclohexyl-carbonyl-1,3,4,6,7,11b-hexahydro-2H-pyrazine(2,1-a)isoquinoline-4-one CAS:55268-74-1 MF: C19H24N2O2 Appearance: white powder Storage:Store in cool and dry place, away from sun light. Package: 25kgs/drum

Praziquantel CAS:55268-74-1

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:White Crystalline Powder Storage:Store in sealed containers

Praziquantel CAS 55268-74-1

Cas:55268-74-1

Min.Order:100 Gram

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Type:Other

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HANWAYS CHEMPHARM CO.,LIMITED

Hanways chempharm is a specialized company concentrating on the R&D, production, marketing and technical service of APIs and pharmaceutical intermediates. The marketing department is located in Wuhan. We have two GMP facilities in Hubei Pr

High Quality Pharmaceutical Grade CAS 55268-74-1 Pharmaceutical Grade Raw Powder Praziquantel

Cas:55268-74-1

Min.Order:1 Kilogram

FOB Price: $200.0 / 400.0

Type:Trading Company

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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

Praziquantel 55268-74-1

Cas:55268-74-1

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Hefei TNJ chemical industry co.,ltd

APIs Best price; High Quality; Superior Service; Fast delivery. Appearance:White crystalline powder Storage:Stored in a cool & dried place Package:25kg/fiber drum or according to your requirements Application:pharmaceutical ,food or oth

Good Quality Praziquantel,CAS 55268-74-1

Cas:55268-74-1

Min.Order:1 Kilogram

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Synthetic route

4-(cyclohexanecarbonyl)-6-hydroxy-1-phenethylpiperazin-2-one
87693-75-2

4-(cyclohexanecarbonyl)-6-hydroxy-1-phenethylpiperazin-2-one

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With hydrogenchloride at 0℃;95%
With sulfuric acid3.0 g (95%)
With sulfuric acid In dichloromethane at 0 - 5℃; for 4h;170.1 g
4-(cyclohexanecarbonyl)-6-hydroxy-1-phenethylpiperazin-2-one
87693-75-2

4-(cyclohexanecarbonyl)-6-hydroxy-1-phenethylpiperazin-2-one

A

2-(cyclohexylcarbonyl)-1,3,4,6,7,11b-hexahydro-2H-pyrazino-(2,1-a)-4-isoquinoleinone (PRAZIQUANTEL)

2-(cyclohexylcarbonyl)-1,3,4,6,7,11b-hexahydro-2H-pyrazino-(2,1-a)-4-isoquinoleinone (PRAZIQUANTEL)

B

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
In 12N-hydrochloric acidA 95%
B n/a
2-(Cyclohexylcarbonyl)-2,3,6,7-tetrahydro-4H-pyrazino-<2,1-a>-isoquinolin-4-one

2-(Cyclohexylcarbonyl)-2,3,6,7-tetrahydro-4H-pyrazino-<2,1-a>-isoquinolin-4-one

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen In methanol at 20℃; under 760.051 Torr; for 19h; Solvent; Inert atmosphere;93%
cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

2,3,6,7-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4(11bH)-one
61196-37-0

2,3,6,7-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4(11bH)-one

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With triethylamine In 1,2-dimethoxyethane for 15h; Ambient temperature;90%
With sodium carbonate In dichloromethane for 2h; Ambient temperature;85%
With triethylamine In 1,2-dimethoxyethane for 20h; Ambient temperature;70%
1-[2-(2-bromophenyl)ethyl]-4-(cyclohexylcarbonyl)-1,3,4-trihydropyrazin-2-one
406954-89-0

1-[2-(2-bromophenyl)ethyl]-4-(cyclohexylcarbonyl)-1,3,4-trihydropyrazin-2-one

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene for 16h; Heating;90%
Multi-step reaction with 2 steps
1: caesium carbonate; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 18 h / 80 °C / Inert atmosphere
2: palladium on activated charcoal; hydrogen / methanol / 19 h / 20 °C / 760.05 Torr / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: caesium carbonate; tetrakis(triphenylphosphine) palladium(0) / 2-methyltetrahydrofuran / 22 h / 80 °C / Inert atmosphere
2: palladium on activated charcoal; hydrogen / methanol / 19 h / 20 °C / 760.05 Torr / Inert atmosphere
View Scheme
N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)cyclohexanecarboxylic acid amide
79848-93-4

N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)cyclohexanecarboxylic acid amide

chloroacetyl chloride
79-04-9

chloroacetyl chloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride In dichloromethane at 20 - 25℃; for 0.7h;88%
Stage #1: N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)cyclohexanecarboxylic acid amide; chloroacetyl chloride With sodium hydroxide In dichloromethane for 0.5h;
Stage #2: With N-benzyl-N,N,N-triethylammonium chloride In dichloromethane for 2h; Reflux;
81%
Stage #1: N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)cyclohexanecarboxylic acid amide; chloroacetyl chloride With sodium hydroxide In dichloromethane at 20℃; for 0.5h;
Stage #2: With benzyltrimethylammonium chloride In dichloromethane for 2h; Reflux;
78%
Stage #1: N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)cyclohexanecarboxylic acid amide; chloroacetyl chloride With sodium hydroxide In dichloromethane at 0℃; for 0.5h;
Stage #2: With tetrabutylammomium bromide In dichloromethane for 3h; Reflux;
68%
With N-benzyl-N,N,N-triethylammonium chloride; sodium hydroxide In water Inert atmosphere;56%
C14H22N2O3*0.5H2O4S

C14H22N2O3*0.5H2O4S

cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: C14H22N2O3*0.5H2O4S at 35 - 45℃; for 10h;
Stage #2: cyclohexanylcarbonyl chloride With lithium hydroxide In water at 5℃; for 5h;
86.5%
1-Cyclohexylcarbonylaminomethyl-2-chloracetyl-1,2,3,4-tetrahydro-isochinolin
60567-53-5, 60567-54-6, 104916-35-0

1-Cyclohexylcarbonylaminomethyl-2-chloracetyl-1,2,3,4-tetrahydro-isochinolin

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride In benzene at 80℃; for 0.7h;86%
C14H22N2O3*H3O4P

C14H22N2O3*H3O4P

cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: C14H22N2O3*H3O4P With phosphoric acid at 10 - 20℃; for 12h;
Stage #2: cyclohexanylcarbonyl chloride With calcium bicarbonate In water at 0℃; for 5h;
86%
cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

N-2-phenylethyl 2-N-(2,2-dimethoxyethylamino)acetamide hydrochloride
90142-14-6

N-2-phenylethyl 2-N-(2,2-dimethoxyethylamino)acetamide hydrochloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: N-2-phenylethyl 2-N-(2,2-dimethoxyethylamino)acetamide hydrochloride With sulfuric acid In dichloromethane at 5 - 20℃; for 3.5h; Cooling with ice; Industrial scale;
Stage #2: cyclohexanylcarbonyl chloride With sodium carbonate at 5 - 20℃; for 2.5h; Reagent/catalyst; Solvent; Temperature; Industrial scale;
85.1%
N-(2,2-dimethoxyethyl)-N-(2-oxo-2-(2-phenethylamino)-ethyl)cyclohexanecarboxamide
90142-13-5

N-(2,2-dimethoxyethyl)-N-(2-oxo-2-(2-phenethylamino)-ethyl)cyclohexanecarboxamide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With methanesulfonic acid In 1,2-dichloro-ethane for 6h; Heating;85%
Stage #1: N-(2,2-dimethoxyethyl)-N-(2-oxo-2-(2-phenethylamino)-ethyl)cyclohexanecarboxamide With methanesulfonic acid at 0 - 70℃; for 6h; Pictet-Spengler cyclisation;
Stage #2: With water; sodium hydroxide pH=8; Pictet-Spengler cyclisation; Cooling with ice;
65%
Multi-step reaction with 2 steps
1: 95 percent / methanesulfonic acid / CH2Cl2 / 3 h / Ambient temperature
2: conc. H2SO4 / 3 h / Ambient temperature
View Scheme
C14H22N2O3*H2O4S

C14H22N2O3*H2O4S

cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: C14H22N2O3*H2O4S With sulfuric acid at 0 - 5℃; for 10h;
Stage #2: cyclohexanylcarbonyl chloride With sodium carbonate In water at 0℃; for 4.5h;
85%
C19H26N2O3

C19H26N2O3

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With trifluoroacetic acid In dichloromethane at 20℃; for 10h; Reagent/catalyst; Solvent; Temperature; Cooling with ice;76.8%
N-(2,2-diethoxy)ethyl-N-2-phenylethyl 2-N-cyclohexylcarbonylaminoacetamide
97004-08-5

N-(2,2-diethoxy)ethyl-N-2-phenylethyl 2-N-cyclohexylcarbonylaminoacetamide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With methanesulfonic acid In dichloromethane for 48h; Heating;73%
Multi-step reaction with 2 steps
1: 91 percent / methanesulfonic acid / CH2Cl2 / 3 h / Ambient temperature
2: conc. H2SO4 / 3 h / Ambient temperature
View Scheme
C14H22N2O3*(x)ClH

C14H22N2O3*(x)ClH

cyclohexanylcarbonyl chloride
2719-27-9

cyclohexanylcarbonyl chloride

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: C14H22N2O3*(x)ClH at 10 - 15℃; for 8h;
Stage #2: cyclohexanylcarbonyl chloride With calcium hydroxide In water at 10℃; for 4h;
70.9%
4-(cyclohexylcarbonyl)-3,4-dihydro-1-(2-phenylethyl)-2(1H)-pyrazinone
94494-35-6

4-(cyclohexylcarbonyl)-3,4-dihydro-1-(2-phenylethyl)-2(1H)-pyrazinone

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sulfuric acid at 20℃; for 3h;70%
With sulfuric acid for 3h; Ambient temperature; Yield given;
cyclohexanecarboxylic acid {[(2-ethoxy-2-(polystyryl)oxy-ethyl)-phenethyl-carbamoyl]-methyl}-amide, via coupling with (cyclohexanecarbonyl-amino)-acetic acid

cyclohexanecarboxylic acid {[(2-ethoxy-2-(polystyryl)oxy-ethyl)-phenethyl-carbamoyl]-methyl}-amide, via coupling with (cyclohexanecarbonyl-amino)-acetic acid

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With methanesulfonic acid In nitromethane at 60℃; for 16h;57%
Cyclohexanecarboxylic acid bicyclo[4.2.0]octa-1,3,5-trien-7-ylmethyl-[(methoxymethyl-carbamoyl)-methyl]-amide
93255-08-4

Cyclohexanecarboxylic acid bicyclo[4.2.0]octa-1,3,5-trien-7-ylmethyl-[(methoxymethyl-carbamoyl)-methyl]-amide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
at 400 - 425℃; for 8h;49%
N-(2-phenylethyl)-N-(cyanomethyl)amide of cyclohexylcarbonylglycine
152189-66-7

N-(2-phenylethyl)-N-(cyanomethyl)amide of cyclohexylcarbonylglycine

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With formic acid; sulfuric acid; nickel 1.) water, reflux, 1 h, 2.) 20 deg C, 3 h; Yield given. Multistep reaction;
Multi-step reaction with 2 steps
1: 53 percent / formic acid, Raney Ni / H2O / 1 h / Heating
2: 70 percent / conc. H2SO4 / 3 h / 20 °C
View Scheme
(cyclohexanecarbonyl-amino)-acetic acid
32377-88-1

(cyclohexanecarbonyl-amino)-acetic acid

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
2: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
3: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
Multi-step reaction with 3 steps
1: 1.) dicyclohexylcarbodiimide / 1.) CHCl3, 20 deg C, 30 min, 2.) CHCl3, 20 deg C, 76 h
2: 53 percent / formic acid, Raney Ni / H2O / 1 h / Heating
3: 70 percent / conc. H2SO4 / 3 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: 1.) dicyclohexylcarbodiimide / 1.) CHCl3, 20 deg C, 30 min, 2.) CHCl3, 20 deg C, 76 h
2: 1.) Raney Ni, formic acid, 2.) conc. H2SO4 / 1.) water, reflux, 1 h, 2.) 20 deg C, 3 h
View Scheme
2-(2-bromophenyl)ethanamine
65185-58-2

2-(2-bromophenyl)ethanamine

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 40 percent / NaBH(OAc)3 / 1,2-dichloro-ethane; various solvent(s) / 3 h / 20 °C
2: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
3: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
4: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
Multi-step reaction with 3 steps
1: 68 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; HOBt; DMAP / CH2Cl2 / 16 h / 20 °C
2: 60 percent / tin(II) trifluoromethanesulfonate / acetone / 40 °C
3: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
phenylmethyl 2-(cyclohexylcarbonylamino)acetate
243139-85-7

phenylmethyl 2-(cyclohexylcarbonylamino)acetate

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 98 percent / H2 / Pd/C / aq. ethanol / 1.5 h
2: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
3: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
4: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
(2,2-dimethoxyethyl)-[2-(2-bromophenyl)ethyl]amine
406954-90-3

(2,2-dimethoxyethyl)-[2-(2-bromophenyl)ethyl]amine

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
2: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
3: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
2-[N-(2,2-dimethoxyethyl)cyclohexylcarbonylamino]acetic acid
60744-45-8

2-[N-(2,2-dimethoxyethyl)cyclohexylcarbonylamino]acetic acid

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 68 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; HOBt; DMAP / CH2Cl2 / 16 h / 20 °C
2: 60 percent / tin(II) trifluoromethanesulfonate / acetone / 40 °C
3: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
phenylmethyl 2-[N-(2,2-dimethoxyethyl)cyclohexylcarbonylamino]acetate
406954-87-8

phenylmethyl 2-[N-(2,2-dimethoxyethyl)cyclohexylcarbonylamino]acetate

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 98 percent / H2 / Pd/C / aq. ethanol
2: 68 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; HOBt; DMAP / CH2Cl2 / 16 h / 20 °C
3: 60 percent / tin(II) trifluoromethanesulfonate / acetone / 40 °C
4: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
N-(2,2-dimethoxyethyl)-N-(2-oxo-2-(2-(2-bromophenyl)ethylamino)ethyl)cyclohexanecarboxamide
406954-88-9

N-(2,2-dimethoxyethyl)-N-(2-oxo-2-(2-(2-bromophenyl)ethylamino)ethyl)cyclohexanecarboxamide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 60 percent / tin(II) trifluoromethanesulfonate / acetone / 40 °C
2: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
N-(2,2-dimethoxyethyl)-N-[2-(2-bromophenyl)ethyl]-2-(cyclohexylcarbonylamino)acetamide
406954-91-4

N-(2,2-dimethoxyethyl)-N-[2-(2-bromophenyl)ethyl]-2-(cyclohexylcarbonylamino)acetamide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
2: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
Cyclohexanecarboxylic acid
98-89-5

Cyclohexanecarboxylic acid

Nα-Fmoc-Nim-tert-butyloxycarbonyl-L-tryptophan 4-hydroxymethylphenoxy resin

Nα-Fmoc-Nim-tert-butyloxycarbonyl-L-tryptophan 4-hydroxymethylphenoxy resin

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 61 percent / 1-hydroxybenzotriazole hydrate; 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; 4-dimethylaminopyridine / CH2Cl2 / 16 h / 20 °C
2: 98 percent / H2 / Pd/C / aq. ethanol / 1.5 h
3: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
4: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
5: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
Multi-step reaction with 5 steps
1: 61 percent / 1-hydroxybenzotriazole hydrate; 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; 4-dimethylaminopyridine / CH2Cl2 / 16 h / 20 °C
2: 98 percent / H2 / Pd/C / aq. ethanol / 1.5 h
3: 88 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 48 h / 20 °C
4: 76 percent / tin(II) trifluoromethanesulfonate / acetone / 48 h / 40 °C
5: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
Multi-step reaction with 5 steps
1: 82 percent / PyBroP; 1-hydroxy-7-azabenzotriazole; DIPEA / CH2Cl2 / 16 h / 20 °C
2: 98 percent / H2 / Pd/C / aq. ethanol
3: 68 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; HOBt; DMAP / CH2Cl2 / 16 h / 20 °C
4: 60 percent / tin(II) trifluoromethanesulfonate / acetone / 40 °C
5: 90 percent / AIBN; Bu3SnH / toluene / 16 h / Heating
View Scheme
N-(2-phenylethyl)aminoacetaldehyde diethyl acetal
94508-09-5

N-(2-phenylethyl)aminoacetaldehyde diethyl acetal

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 1.) NEt3 / 1.) CH2Cl2, 0 deg C, 1 h; 2.) CH2Cl2, reflux, 7 h
2: 91 percent / methanesulfonic acid / CH2Cl2 / 3 h / Ambient temperature
3: conc. H2SO4 / 3 h / Ambient temperature
View Scheme
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

4-chloro-2-(cyclohexylcarbonyl)-2,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-3-yldimethyliminiomethane perchlorate

4-chloro-2-(cyclohexylcarbonyl)-2,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-3-yldimethyliminiomethane perchlorate

Conditions
ConditionsYield
Stage #1: N,N-dimethyl-formamide With trichlorophosphate at 20℃; for 1h;
Stage #2: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one at 60℃; for 5h; Vilsmeier formylation;
Stage #3: With perchloric acid In methanol
95%
2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2,3,6,7-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4(11bH)-one
61196-37-0

2,3,6,7-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4(11bH)-one

Conditions
ConditionsYield
With hydrogenchloride In water Reflux;91.2%
With hydrogenchloride In ethanol for 60h; Reflux;83%
Stage #1: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one With hydrogenchloride; water for 24h; Reflux;
Stage #2: With sodium hydroxide In water regioselective reaction;
80%
2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-<2-N-(cyclohexylcarbonyl)-N-formyl-amioacyl>-1,2,3,4-tetrahydroisoquinolin-1-one

2-<2-N-(cyclohexylcarbonyl)-N-formyl-amioacyl>-1,2,3,4-tetrahydroisoquinolin-1-one

Conditions
ConditionsYield
With 3-chloro-benzenecarboperoxoic acid In dichloromethane for 168h; Ambient temperature;81%
Multi-step reaction with 2 steps
1: 38 percent / sulfur / 2 h / 180 °C
2: 73 percent / 85percent MCPBA / CH2Cl2
View Scheme
4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-(cyclohexylcarbonyl)-3-(4-methoxybenzylidene)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-77-8

2-(cyclohexylcarbonyl)-3-(4-methoxybenzylidene)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sodium hydroxide In ethanol for 3h; Claisen-Schmidt Condensation; Reflux;75%
2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-cyclohexylthiocarbonyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline-4-thione

2-cyclohexylthiocarbonyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline-4-thione

Conditions
ConditionsYield
With Lawessons reagent In toluene for 3h; Heating;70%
thiophene-2-carbaldehyde
98-03-3

thiophene-2-carbaldehyde

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-(cyclohexylcarbonyl)-3-(thiophen-2-methylene)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-78-9

2-(cyclohexylcarbonyl)-3-(thiophen-2-methylene)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sodium hydroxide In ethanol for 3h; Claisen-Schmidt Condensation; Reflux;70%
4-methylpiperidin
626-58-4

4-methylpiperidin

formaldehyd
50-00-0

formaldehyd

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-(cyclohexylcarbonyl)-3-((4-methylpiperidin-1-yl)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-80-3

2-(cyclohexylcarbonyl)-3-((4-methylpiperidin-1-yl)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: 4-methylpiperidin; formaldehyd In ethanol for 0.5h; Mannich Aminomethylation; Reflux;
Stage #2: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one In ethanol for 8h; Reflux;
65%
1-methyl-piperazine
109-01-3

1-methyl-piperazine

formaldehyd
50-00-0

formaldehyd

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-2-(cyclohexylcarbonyl)-3-((4-methylpiperazin-1-yl)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-79-0

2-2-(cyclohexylcarbonyl)-3-((4-methylpiperazin-1-yl)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: 1-methyl-piperazine; formaldehyd In ethanol for 0.5h; Mannich Aminomethylation; Reflux;
Stage #2: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one In ethanol for 8h; Reflux;
60%
formaldehyd
50-00-0

formaldehyd

di-n-propylamine
142-84-7

di-n-propylamine

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-(cyclohexylcarbonyl)-3-dipropylaminomethyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-81-4

2-(cyclohexylcarbonyl)-3-dipropylaminomethyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: formaldehyd; di-n-propylamine In ethanol for 0.5h; Mannich Aminomethylation; Reflux;
Stage #2: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one In ethanol for 8h; Reflux;
60%
formaldehyd
50-00-0

formaldehyd

ethanolamine
141-43-5

ethanolamine

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-2-(cyclohexylcarbonyl)-3-((2-hydroxyethylamino)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-82-5

2-2-(cyclohexylcarbonyl)-3-((2-hydroxyethylamino)methyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
Stage #1: formaldehyd; ethanolamine In ethanol for 0.5h; Mannich Aminomethylation; Reflux;
Stage #2: 2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one In ethanol for 8h; Reflux;
60%
benzaldehyde
100-52-7

benzaldehyde

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-(cyclohexylcarbonyl)-3-benzylidene-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one
1403763-76-7

2-(cyclohexylcarbonyl)-3-benzylidene-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one

Conditions
ConditionsYield
With sodium hydroxide In ethanol for 3h; Claisen-Schmidt Condensation; Reflux;60%
2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one
55268-74-1

2-cyclohexanecarbonyl-1,2,3,6,7,11b-hexahydro-pyrazino[2,1-a]isoquinolin-4-one

2-cyclohexylthiocarbonyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2-1a]isoquinolin-4-one

2-cyclohexylthiocarbonyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2-1a]isoquinolin-4-one

Conditions
ConditionsYield
With Lawessons reagent In toluene for 3h; Heating;50%

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