Dayangchem's 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. DayangChem can provide different quantities
Cas:1449-68-9
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
Cas:1449-68-9
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
inquiry1.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
Cas:1449-68-9
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHello, 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
Cas:1449-68-9
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryHenan 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
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 have s
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
Cas:1449-68-9
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryShandong 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
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
Cas:1449-68-9
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryWe 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
Cas:1449-68-9
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou
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.
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
We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:clear oily liquid Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as prim
Supply top quality products with a reasonable price Application:api
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
2-bromoselenopheneAppearance:ask Storage:Keep in dry and cool condition Package:foil aluminium bag/vacuum packing Application:intermediates Transportation:By express (Door to door) such as FEDEX, DHL, EMS for small amount. By air(airport to airport)
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right
1,Best Quality: Our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other countries, and we have got very good feedback from our customers.so
Cas:1449-68-9
Min.Order:10 Gram
FOB Price: $1.0 / 2.0
Type:Trading Company
inquiry2-bromoselenopheneAppearance:ask Storage:Keep in dry and cool condition Package:foil aluminium bag/vacuum packing Application:intermediates Transportation:by air or by sea
We are a trading company aiming at providing high-quality services to customers. Established for many years, with good reputation in the industry Storage:Sealed and preserved Application:Fine chemical intermediates, used as the main raw material for
2-BROMOSELENOPHENEAppearance:Pls see the Details Storage:keep in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/pharma intermediate Transportation:By Sea,by Air,By courier like DHL or Fedx. Port:Sha
High Cost-Effective Application:intermediates
2-bromoselenopheneAppearance:ask Storage:Keep in dry and cool condition Package:foil aluminium bag/vacuum packing Application:intermediates Transportation:by air or by sea
Conditions | Yield |
---|---|
With N-Bromosuccinimide In dichloromethane; acetic acid at 0℃; for 2h; | 56% |
With N-Bromosuccinimide In dichloromethane; acetic acid | 55% |
With N-Bromosuccinimide In tetrahydrofuran at 20℃; Inert atmosphere; | 38% |
Conditions | Yield |
---|---|
With triethylamine; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 20℃; for 24h; Sonogashira coupling reaction; | 93% |
Conditions | Yield |
---|---|
With triethylamine; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 20℃; for 24h; Sonogashira coupling reaction; | 88% |
2-bromoselenophene
2-bromo-3-methylthiophene
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II); magnesium In diethyl ether 0 deg C, then RT., 3 h; | 85.2% |
Conditions | Yield |
---|---|
With triethylamine; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 20℃; for 24h; Sonogashira coupling reaction; | 85% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 24h; Suzuki cross-coupling; Heating; | 85% |
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II); magnesium In diethyl ether at 0℃; for 3h; | 84.5% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0) In toluene at 110℃; for 20h; Stille Cross Coupling; Inert atmosphere; | 83.8% |
2-bromoselenophene
2-isopropyl-4-methylthiazole
Conditions | Yield |
---|---|
With potassium acetate; palladium diacetate In N,N-dimethyl acetamide at 90℃; for 24h; Inert atmosphere; | 82% |
Conditions | Yield |
---|---|
With triethylamine; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 20℃; for 24h; Sonogashira coupling reaction; | 81% |
2-bromoselenophene
4-methoxyphenylboronic acid
2-(4-methoxyphenyl)selenophene
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 72h; Suzuki cross-coupling; Heating; | 81% |
Conditions | Yield |
---|---|
With potassium acetate; palladium diacetate In N,N-dimethyl acetamide at 90℃; for 24h; Inert atmosphere; | 81% |
2-bromoselenophene
tributyl(2-thienylethynyl)stannane
Conditions | Yield |
---|---|
dichloro bis(acetonitrile) palladium(II) In N,N-dimethyl-formamide at 20℃; for 10h; heteroarylation; | 80% |
2-bromoselenophene
2-ethyl-4-methyl-1,3-thiazole
Conditions | Yield |
---|---|
With potassium acetate; palladium diacetate In N,N-dimethyl acetamide at 90℃; for 24h; Catalytic behavior; Reagent/catalyst; Temperature; Solvent; Inert atmosphere; | 80% |
2-bromoselenophene
4-acetylphenylboronic acid
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 24h; Suzuki cross-coupling; Heating; | 79% |
Conditions | Yield |
---|---|
With triethylamine; bis-triphenylphosphine-palladium(II) chloride In N,N-dimethyl-formamide at 20℃; for 24h; Sonogashira coupling reaction; | 78% |
Conditions | Yield |
---|---|
With potassium phosphate; copper(l) iodide In 1,4-dioxane for 8h; Heating; | 75% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In toluene at 110℃; | 75% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 24h; Suzuki cross-coupling; Heating; | 74% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In toluene at 110℃; | 71% |
2-bromoselenophene
2-(tributylstannyl)selenophene
2,2′-biselenophene
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0) In N,N-dimethyl-formamide at 110℃; for 8h; Stille Cross Coupling; Inert atmosphere; | 71% |
Conditions | Yield |
---|---|
With potassium phosphate; copper(l) iodide In 1,4-dioxane for 8h; Heating; | 70% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 48h; Suzuki cross-coupling; Heating; | 70% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In toluene at 110℃; | 70% |
2-bromoselenophene
2-chloro-4-fluorobenzene-1-sulfonyl chloride
Conditions | Yield |
---|---|
With palladium diacetate; lithium carbonate In 1,4-dioxane at 140℃; for 4h; Schlenk technique; Inert atmosphere; regioselective reaction; | 70% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 48h; Suzuki cross-coupling; Heating; | 69% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 48h; Suzuki cross-coupling; Heating; | 69% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In toluene at 110℃; | 69% |
Conditions | Yield |
---|---|
With potassium phosphate; copper(l) iodide In 1,4-dioxane for 12h; Heating; | 65% |
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In toluene at 110℃; | 64% |
2-bromoselenophene
3,4-difluorobenzenesulfonyl chloride
Conditions | Yield |
---|---|
With palladium diacetate; lithium carbonate In 1,4-dioxane at 140℃; for 4h; Schlenk technique; Inert atmosphere; regioselective reaction; | 64% |
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