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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 ch

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester Manufacturer/High quality/Best price/In stock

Cas:874649-82-8

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

6-Fluoro-3,4-dihydro-(2H)-1-benzopyran-2-carboxylic acid methyl ester

Cas:874649-82-8

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Qingdao Beluga Import and Export Co., LTD

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate CAS:874649-82-8 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specia

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate CAS:874649-82-8

Cas:874649-82-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester

Cas:874649-82-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:1 Gram

FOB Price: $1.0

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

6-Fluoro-3,4-dihydro-(2H)-1-benzopyran-2-carboxylic acid methyl ester

Cas:874649-82-8

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

SHANGHAI SYSTEAM BIOCHEM CO., LTD

We are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

High Quality Best price Fast Delivery Good Service Welcome to Henan Tianfu Chemical Co., Ltd. website. Our company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; developm

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:1 Kilogram

Negotiable

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

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

We Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

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

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

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

Methyl 6-fluorochroman-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

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

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier

6-Fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid methyl ester

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Manufacturers

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

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price Application:Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

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

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate CAS No.874649-82-8

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Luyunjia Chemistry Xiamen Limited

Xiamen Luyunjia Trading Co.,Ltd Package:1kg/bag; 727kg/drum, or as customer's request. Application:Xiamen Luyunjia Trading Co.,Ltd Transportation:DHL, EMS, FedEx, TNT, AIR, SEA Port:Beijing,Shanghai,Guangzhou ,China main port

2H-1- benzopyran-2 - carboxylic acid, 6 - fluoro -3,4 - dihydro - methyl

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

874649-82-8

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

2H-1-Benzopyran-2-carboxylicacid, 6-fluoro-3,4-dihydro-, methyl ester cas 874649-82-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by exp

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

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou ZeErRui Chemical Co., Ltd.

Hangzhou ZeErRui Chemical Co., Ltd. is focused on customization, research and development and production of APIs and advanced intermediates, which can effectively compensate for the deficiencies of traditional CRO and CMO. Priority of high-tech barri

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers2. Produce products of different specifications and sizes according to your requirements.3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures sta

methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hunan Longxianng Runhui Trading Co.,Ltd

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best priceAppearance:detailed see specifications Storage:Store in dry, dark and ventilated place Package:according to the clients requirement Application:Aromatics;Heterocycles;Interm

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Saiwante (shanghai) New Material Technology Co., Ltd.

Stable supply of goods and provision of high-quality services Application:As raw materials in the field of medicine and biology

Methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate/High quality/Best price

Cas:874649-82-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

6-fluoro-4-oxo-4H-1-benzopyran-2-carboxylic acid
99199-59-4

6-fluoro-4-oxo-4H-1-benzopyran-2-carboxylic acid

methanesulfonic acid
75-75-2

methanesulfonic acid

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
With hydrogen; 5%-palladium/activated carbon In tetrahydrofuran at 45 - 55℃; under 3000.3 Torr;100%
6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid
99199-60-7

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid

methanol
67-56-1

methanol

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
With sulfuric acid at 25 - 30℃;98%
With sulfuric acid at 30℃; Reflux;97%
Stage #1: 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid; methanol With sulfuric acid at 20 - 60℃; for 3.5h;
Stage #2: With water; sodium hydrogencarbonate In methanol
87.9%
With sulfuric acid at 65 - 70℃; for 8h; Fischer–Speier Esterification;85%
1-(5-fluoro-2-hydroxyphenyl)ethan-1-one
394-32-1

1-(5-fluoro-2-hydroxyphenyl)ethan-1-one

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium methylate; methanol / tetrahydrofuran / 5 - 25 °C
1.2: 5 - 15 °C
1.3: Reflux
2.1: hydrogen / 5%-palladium/activated carbon / tetrahydrofuran / 45 - 55 °C / 3000.3 Torr
View Scheme
Multi-step reaction with 4 steps
1: sodium methylate / methanol / 65 - 70 °C
2: hydrogenchloride / water / 85 - 90 °C
3: hydrogen; palladium on activated charcoal; acetic acid / 75 - 80 °C / Inert atmosphere; Autoclave
4: sulfuric acid / 8 h / 65 - 70 °C
View Scheme
C12H13FO5

C12H13FO5

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: aluminum (III) chloride / dichloromethane / 0 - 20 °C
2: triphenylphosphine; diethylazodicarboxylate / tetrahydrofuran / 1 h / 0 °C
3: 5%-palladium/activated carbon; hydrogenchloride; hydrogen / methanol / 5 h / 20 °C / 760.05 Torr
View Scheme
methyl 6-fluoro-4-oxo-3,4-dihydro-2H-chroman-2-carboxylate
134102-10-6

methyl 6-fluoro-4-oxo-3,4-dihydro-2H-chroman-2-carboxylate

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
With hydrogenchloride; 5%-palladium/activated carbon; hydrogen In methanol at 20℃; under 760.051 Torr; for 5h;
C11H11FO5

C11H11FO5

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triphenylphosphine; diethylazodicarboxylate / tetrahydrofuran / 1 h / 0 °C
2: 5%-palladium/activated carbon; hydrogenchloride; hydrogen / methanol / 5 h / 20 °C / 760.05 Torr
View Scheme
4-Fluorophenol
371-41-5

4-Fluorophenol

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: 45 - 50 °C
2: aluminum (III) chloride; hydrogenchloride / water / 140 - 145 °C
3: sodium methylate / methanol / 65 - 70 °C
4: hydrogenchloride / water / 85 - 90 °C
5: hydrogen; palladium on activated charcoal; acetic acid / 75 - 80 °C / Inert atmosphere; Autoclave
6: sulfuric acid / 8 h / 65 - 70 °C
View Scheme
4-fluorophenyl acetate
405-51-6

4-fluorophenyl acetate

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: aluminum (III) chloride; hydrogenchloride / water / 140 - 145 °C
2: sodium methylate / methanol / 65 - 70 °C
3: hydrogenchloride / water / 85 - 90 °C
4: hydrogen; palladium on activated charcoal; acetic acid / 75 - 80 °C / Inert atmosphere; Autoclave
5: sulfuric acid / 8 h / 65 - 70 °C
View Scheme
ethyl 4-(5-fluoro-2-hydroxyphenyl)-2,4-dioxobutanoate

ethyl 4-(5-fluoro-2-hydroxyphenyl)-2,4-dioxobutanoate

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrogenchloride / water / 85 - 90 °C
2: hydrogen; palladium on activated charcoal; acetic acid / 75 - 80 °C / Inert atmosphere; Autoclave
3: sulfuric acid / 8 h / 65 - 70 °C
View Scheme
6-fluoro-4-oxo-4H-1-benzopyran-2-carboxylic acid
99199-59-4

6-fluoro-4-oxo-4H-1-benzopyran-2-carboxylic acid

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrogen; palladium on activated charcoal; acetic acid / 75 - 80 °C / Inert atmosphere; Autoclave
2: sulfuric acid / 8 h / 65 - 70 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde
409346-73-2

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde

Conditions
ConditionsYield
With morpholine; sodium bis(2-methoxyethoxy)aluminium dihydride In toluene at -10℃; for 2h; Reagent/catalyst; Inert atmosphere;98%
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

6-fluoro-3,4-dihydro-2H-chromene-2-carbohydrazide

6-fluoro-3,4-dihydro-2H-chromene-2-carbohydrazide

Conditions
ConditionsYield
With hydrazine hydrate In ethanol Reflux;91%
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

dimethylsulfoxonium-2-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-2-oxoethylide
1017878-51-1

dimethylsulfoxonium-2-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-2-oxoethylide

Conditions
ConditionsYield
Stage #1: trimethylsulfoxonium iodide With potassium tert-butylate In tetrahydrofuran at 25 - 70℃; for 2 - 2.16667h; Protected from light;
Stage #2: (-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate In tetrahydrofuran at 20℃; for 3.5 - 19h; Product distribution / selectivity;
48%
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

(+/-)-6-fluoro-3,4-dihydro-8-nitro-2H-1-benzopyran-2-carboxylic acid

(+/-)-6-fluoro-3,4-dihydro-8-nitro-2H-1-benzopyran-2-carboxylic acid

Conditions
ConditionsYield
With nitric acid
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

6-fluoro-3,4-dihydro-2-oxiranyl-2H-1-benzopyran
99199-90-3

6-fluoro-3,4-dihydro-2-oxiranyl-2H-1-benzopyran

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: n-butyllithium / hexane; tetrahydrofuran / -85 - -75 °C
1.2: -80 - 0 °C
2.1: ethanol; sodium tetrahydroborate / 2 h / 0 °C / Inert atmosphere
3.1: sodium hydroxide / isopropyl alcohol; water / 1.5 h / 0 °C / Inert atmosphere
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

2-chloro-1-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2yl)ethanol
1017878-67-9

2-chloro-1-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2yl)ethanol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: n-butyllithium / hexane; tetrahydrofuran / -85 - -75 °C
1.2: -80 - 0 °C
2.1: ethanol; sodium tetrahydroborate / 2 h / 0 °C / Inert atmosphere
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

Conditions
ConditionsYield
Stage #1: (-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate; chlorobromomethane With n-butyllithium In tetrahydrofuran; hexane at -85 - -75℃;
Stage #2: With borane In tetrahydrofuran; hexane at -80 - -70℃;
Stage #3: With water; sodium hydroxide In tetrahydrofuran; hexane for 2h; Reflux;
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

chlorobromomethane
74-97-5

chlorobromomethane

2-chloro-1-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)ethan-1-one
943126-72-5

2-chloro-1-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)ethan-1-one

Conditions
ConditionsYield
Stage #1: (-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate; chlorobromomethane With n-butyllithium In tetrahydrofuran; hexane at -85 - -75℃;
Stage #2: With acetic acid In tetrahydrofuran; hexane; water at -80 - 0℃;
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

A

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde
409346-73-2

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde

B

(6-fluoro-3,4-dihydro-2H-chromene-2-yl)methanol
99199-62-9

(6-fluoro-3,4-dihydro-2H-chromene-2-yl)methanol

Conditions
ConditionsYield
With sodium bis(2-methoxyethoxy)aluminium dihydride In dichloromethane; isopropyl alcohol; toluene at -78 - -73℃; Concentration; Solvent; Inert atmosphere;
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

[1R*(R*)]-6-fluoro-3,4-dihydro-2-(oxiran-2-yl)-2H-chromene

[1R*(R*)]-6-fluoro-3,4-dihydro-2-(oxiran-2-yl)-2H-chromene

[1S*(R*)]-6-fluoro-3,4-dihydro-2-(oxiran-2-yl)-2H-chromene

[1S*(R*)]-6-fluoro-3,4-dihydro-2-(oxiran-2-yl)-2H-chromene

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride / dichloromethane; toluene; isopropyl alcohol / -78 - -73 °C / Inert atmosphere
2: potassium tert-butylate / dimethyl sulfoxide / 25 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid
99199-60-7

6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylic acid

Conditions
ConditionsYield
With lithium hydroxide In tetrahydrofuran; methanol; water at 20℃; for 2h;
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

[R*(R*)]-6-fluoro-3,4-dihydro-2-oxiran-2-yl-2H-benzopyran

[R*(R*)]-6-fluoro-3,4-dihydro-2-oxiran-2-yl-2H-benzopyran

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

(S*,R*)-(+/-)-α-[(benzylamino)methyl]-(6-fluoro-2-chromanyl)methanol

(S*,R*)-(+/-)-α-[(benzylamino)methyl]-(6-fluoro-2-chromanyl)methanol

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
3: water / 6 h / 10 - 30 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

[2S*[1R*,5R*(R*)]]α,α'-[[(phenylmethyl)imino]bismethylene] bis [6-fluoro-3,4-dihydro-2H-1-benzopyran-2-methanol]

[2S*[1R*,5R*(R*)]]α,α'-[[(phenylmethyl)imino]bismethylene] bis [6-fluoro-3,4-dihydro-2H-1-benzopyran-2-methanol]

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
3: methanol / 15 h / 30 °C / Reflux
View Scheme
Multi-step reaction with 4 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
3: water / 6 h / 10 - 30 °C
4: methanol / 15 h / 30 °C / Reflux
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

nebivolol hydrochloride

nebivolol hydrochloride

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
3: methanol / 15 h / 30 °C / Reflux
4: palladium on activated charcoal; hydrogen / acetic acid / 30 - 35 °C
View Scheme
Multi-step reaction with 5 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
3: water / 6 h / 10 - 30 °C
4: methanol / 15 h / 30 °C / Reflux
5: palladium on activated charcoal; hydrogen / acetic acid / 30 - 35 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

[R*(S*)]-6-fluoro-3,4-dihydro-2-oxiran-2-yl-2H-benzopyran

[R*(S*)]-6-fluoro-3,4-dihydro-2-oxiran-2-yl-2H-benzopyran

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium bis(2-methoxyethoxy)aluminium dihydride; morpholine / toluene / 2 h / -10 °C / Inert atmosphere
2: trimethylsulfoxonium iodide; sodium methylate / dimethyl sulfoxide; dichloromethane / 2 h / 10 - 15 °C
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

1-(2,6-difluorobenzyl)-4-(5-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazol-2-yl)-1H-1,2,3-triazole

1-(2,6-difluorobenzyl)-4-(5-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazol-2-yl)-1H-1,2,3-triazole

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrazine hydrate / ethanol / Reflux
2: trichlorophosphate / Reflux
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

2,5-bis(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazole

2,5-bis(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazole

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrazine hydrate / ethanol / Reflux
2: trichlorophosphate / Reflux
View Scheme
(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate
874649-82-8

(-)-(R)-methyl 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxylate

6-fluoro-2-(5-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazol-2-yl)-4H-chromen-4-one

6-fluoro-2-(5-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-1,3,4-oxadiazol-2-yl)-4H-chromen-4-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrazine hydrate / ethanol / Reflux
2: trichlorophosphate / Reflux
View Scheme

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