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:58917-25-2
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryOur 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
Cas:58917-25-2
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiry(R)-GAMMA-VALEROLACTONE CAS:58917-25-2 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic
Cas:58917-25-2
Min.Order:1 Gram
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:58917-25-2
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
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
Cas:58917-25-2
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryJ&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
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryZibo 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
Cas:58917-25-2
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
high qualityAppearance:white crystalline powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
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.
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAnsciep 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
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryWe 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:Chemical intermediate
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Trading Company
inquiry(R)-?-VALEROLACTONEAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryGood 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
1. Subsidiary of Institute of Chemistry, Henan Academy of Sciences, national research platform;2. About 30 years’ experience in this field since 1983;3. An experienced R&D team consisting of Doctors and Masters;4. Various types of analytical instrume
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryPrice, 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
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Trading Company
inquiryUnited Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAt Capot,We can synthesize and purify your complex molecules from 100 gram to 10 tons.Appearance:Clear colorless to light yellow liquid Storage:Dry,Seal and Cool place Package:1G,5G,10G,25G,100G,250G,500G,1KG,5KG,10KG,25KG,50KG,100KG,150KG,200KG. App
FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the (R)-GAMMA-VALEROLACTONE, CAS:58917-25-2 with the most competitive price and the best
2(3H)-Furanone,dihydro-5-methyl-, (5R)- 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:Shanghai/She
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Trading Company
inquiryManufacturer,strong R&D,professional team Storage:Store in a cool, dry place. Store in a tightly closed container. Package:according to your requirement Application:ZhiShang Chemical is owned by ZhiShang Group, is a professional new-type chemicals en
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Trading Company
inquiryhigh purity Application:Drug intermediates Materials intermediates and active molecules
more information,please contact us
Cas:58917-25-2
Min.Order:0
Negotiable
Type:Trading Company
inquirymore information,please contact us
Cas:58917-25-2
Min.Order:0
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Type:Trading Company
inquirylevulinic acid methyl ester
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogenchloride; hydrogen; [RuCl2-((R)-binap)]*NEt3 In methanol at 40℃; under 2068.6 Torr; for 48h; | 99% |
With hydrogenchloride; ruthenium trichloride; hydrogen; (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl In methanol at 60℃; under 45603.1 Torr; for 10h; Autoclave; optical yield given as %ee; | 88% |
Stage #1: levulinic acid methyl ester With hydrogen In methanol at 65℃; under 68255.5 Torr; for 48h; Stage #2: With sulfuric acid In methanol Heating; | 72% |
With Rhodococcus ruber alcohol dehydrogenase; isopropyl alcohol In aq. buffer at 30℃; for 24h; pH=9; Enzymatic reaction; | n/a |
(S)-2-[(R)-4-hydroxypentanamide]-3-phenyl-N-[(R)-1-phenylethyl]propanamide
A
(R)-5-methyl-2-oxotetrahydrofuran
B
(S)-2-amino-3-phenyl-N-[(R)-1-phenylethyl]propanamide
Conditions | Yield |
---|---|
With hydrogenchloride In methanol for 3h; Reflux; | A 93% B 96% |
ethyl (S)-4-hydroxypentanoate
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In methanol at 20℃; for 20h; Inert atmosphere; enantioselective reaction; | 92% |
γ-hydroxyvaleric acid
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogenchloride In water at 20℃; enantioselective reaction; | 91% |
With trifluoroacetic acid In dichloromethane at 0 - 20℃; for 6h; | 83% |
With trifluoroacetic acid In dichloromethane at 0 - 20℃; for 6h; | 83% |
With hydrogenchloride at 25℃; for 16h; Yield given; |
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In methanol at 20℃; for 24h; | 87% |
3-(S)-oxiranyl-propionic acid methyl ester
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; sodium iodide In 1,2-dimethoxyethane for 2h; Heating; | 85% |
(S)-5-tosyloxypentan-4-olide
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With tri-n-butyl-tin hydride; sodium iodide; 2,2'-azobis(isobutyronitrile) | 79% |
Multi-step reaction with 2 steps 1: 74 percent / LAH / tetrahydrofuran / 3 h / Heating 2: 40 percent / Ag2CO3/Celite / CHCl3 / 12 h / Heating View Scheme |
(R)-3-hydroxy-1-(p-toluenesulfonyloxy)butane
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
Stage #1: potassium cyanide; (R)-3-hydroxy-1-(p-toluenesulfonyloxy)butane In ethanol; water for 16h; Reflux; Stage #2: With hydrogenchloride In ethanol; water for 24h; Reflux; | 75% |
potassium cyanide
(R)-3-hydroxy-1-(p-toluenesulfonyloxy)butane
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol; water 1.) reflux, 16 h, 2.) reflux, 24 h; | 68% |
levulinic acid
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With yeast Pichia farinosa in a glucose medium at 30℃; for 48h; | 67% |
Multi-step reaction with 2 steps 1: 83 percent / (-)-diisopinocampheylborane / tetrahydrofuran / 17 h / 20 °C 2: 83 percent / CF3CO2H / CH2Cl2 / 6 h / 0 - 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: C67H80IrNOP(1+)*C32H12BF24(1-); hydrogen; triethylamine / methanol / 24 h / 65 °C 2: hydrogenchloride / water / 20 °C View Scheme |
(R)-ethyl-4-propionoxypentanoate
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol for 6h; Heating; | 65% |
(S)-γ-Phenylselenomethyl-γ-butyrolactone
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With triphenylstannane In toluene for 2.5h; Heating; | 64% |
(-)-(S)-5-iodomethyloxol-3-en-2-one
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; | 63% |
With calcium carbonate; Ni-Ra W-4 In ethanol for 2h; | 63% |
(R)-1-(n-butyltellanyl)-3-butanol
carbon dioxide
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
Stage #1: (R)-1-(n-butyltellanyl)-3-butanol With n-butyllithium In tetrahydrofuran; hexane at -70℃; for 0.0833333h; Stage #2: carbon dioxide In tetrahydrofuran; hexane at -78 - 20℃; Stage #3: With hydrogenchloride In tetrahydrofuran; hexane at 20℃; for 0.5h; Further stages.; | 52% |
(4R)-pentane-1,4-diol
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With Celite; silver carbonate In chloroform for 12h; Heating; | 40% |
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; Trametes versicolor laccase In aq. buffer at 0℃; for 8h; pH=5; Enzymatic reaction; | n/a |
levulinic acid methyl ester
A
(R)-(-)-γ-hydroxy-γ-methylbutyric acid methylester
B
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogen In methanol at 65℃; under 68255.5 Torr; for 48h; | A 25% B n/a |
With hydrogenchloride; rhodium(III) chloride hydrate; hydrogen; (R)-2,2'-bis(diphenylphosphanyl)-1,1'-binaphthyl In methanol at 65℃; under 45603.1 Torr; for 6h; Autoclave; optical yield given as %ee; |
5-methylenedihydrofuran-2-one
A
(R)-5-methyl-2-oxotetrahydrofuran
B
(S)-γ-valerolactone
Conditions | Yield |
---|---|
With hydrogen; bis(acetato){(R)-(+)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl}rutenium(II) In dichloromethane at 50℃; under 76000 Torr; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With hydrogen; {RuCl(C6H6)((S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl)}Cl In dichloromethane at 50℃; under 76000.1 Torr; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With tetrafluoroboric acid; hydrogen; ruthenium catalyst with atropoisomeric (R)-ligand In water; isopropyl alcohol at 60℃; under 45003.6 Torr; for 20h; Catalytic hydrogenation; Title compound not separated from byproducts; |
4-hydroxyvaleric acid
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogen cation |
rac-5-Nitro-2-pentanol
A
(R)-5-methyl-2-oxotetrahydrofuran
B
(S)-γ-valerolactone
Conditions | Yield |
---|---|
With dihydrogen peroxide; potassium carbonate In methanol for 24h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
carbon dioxide
(R)-4-Chlor-2-butanol
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogenchloride; methylmagnesium chloride; lithium Yield given. Multistep reaction; |
(R)-(-)-γ-hydroxy-γ-methylbutyric acid methylester
A
(R)-5-methyl-2-oxotetrahydrofuran
B
(S)-γ-valerolactone
Conditions | Yield |
---|---|
acid Title compound not separated from byproducts; |
(R)-(-)-γ-hydroxy-γ-methylbutyric acid methylester
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
acid |
(R)-(E)-Methyl 4-hydroxypent-2-enoate
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogen; pyridinium p-toluenesulfonate; palladium on activated charcoal Yield given. Multistep reaction; |
Acetic acid (2R,3R)-4-bromo-2-methyl-5-oxo-tetrahydro-furan-3-yl ester
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With hydrogen; triethylamine; palladium on activated charcoal |
(R)-β-angelica lactone
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; |
(R)-pent-4-en-2-ol
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium dichromate; dimethylsulfide borane complex; sulfuric acid 1.) Et2O, a) -78 to 25 deg C, b) 25 deg C, 12 h, 2.) reflux, 1 h; Yield given. Multistep reaction; | |
Multi-step reaction with 4 steps 1: 90 percent / DMAP, Et3N / CH2Cl2 / 2 h 2: 1.) BH2Cl*SMe2, 2.) CrO3 / 1.) CH2Cl2, 25 deg C, 2 h, 2.) aq. AcOH, 25 deg C, 2 h 3: 1 N aq. NaOH / 1 h / 80 °C 4: aq. HCl / 16 h / 25 °C View Scheme |
(-)-(S)-5-n-propylthiomethyloxol-3-en-2-one
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; |
(S)-(-)-γ-bromometil-α,β-butenolide
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; |
(-)-(S)-5-phenylthiomethyloxol-3-en-2-one
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; |
(-)-(S)-5-methanesulfonyloxymethyloxol-3-en-2-one
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; Raney-Ni W-4 In ethanol for 2h; |
(R)-5-methyl-2-oxotetrahydrofuran
(3S)-1,3-bis[(tert-butyldimethylsilyl)oxy]hex-5-ene
Conditions | Yield |
---|---|
With titanium(IV) isopropylate; cyclohexylmagnesium bromide In diethyl ether; hexane; toluene at 25℃; for 2h; Kulinkovich cyclopropanation; | 92% |
(R)-5-methyl-2-oxotetrahydrofuran
R-(+)-γ-valerolactol
Conditions | Yield |
---|---|
With diisobutylaluminium hydride In dichloromethane at -78℃; for 0.5h; Inert atmosphere; | 91% |
(R)-5-methyl-2-oxotetrahydrofuran
(2E,6R)-6-hydroxyhept-2-enoic acid tert.-butyl ester
Conditions | Yield |
---|---|
Stage #1: C7H15O5P With sodium hydride In tetrahydrofuran at 20℃; Cooling; Stage #2: (R)-5-methyl-2-oxotetrahydrofuran With diisobutylaluminium hydride In tetrahydrofuran at -78 - 20℃; | 90.1% |
(R)-5-methyl-2-oxotetrahydrofuran
formic acid ethyl ester
Sodium; [(R)-5-methyl-2-oxo-dihydro-furan-(3Z)-ylidene]-methanolate
Conditions | Yield |
---|---|
With sodium hydride In diethyl ether; ethanol Ambient temperature; | 84% |
(R)-5-methyl-2-oxotetrahydrofuran
(4R)-pentane-1,4-diol
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride In diethyl ether at 0 - 20℃; Inert atmosphere; | 84% |
(R)-5-methyl-2-oxotetrahydrofuran
1-{[(S)-1-(Bbenzyloxy)hex-5-yn-3-yloxy]methyl}benzene
(2R,9S)-9,11-bis(benzyloxy)-2-hydroxyundec-6-yn-5-one
Conditions | Yield |
---|---|
Stage #1: 1-{[(S)-1-(Bbenzyloxy)hex-5-yn-3-yloxy]methyl}benzene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h; Stage #2: With boron trifluoride diethyl etherate In tetrahydrofuran at -78℃; for 0.166667h; Stage #3: (R)-5-methyl-2-oxotetrahydrofuran In tetrahydrofuran at 78℃; for 1h; | 82% |
formaldehyd
(R)-5-methyl-2-oxotetrahydrofuran
Conditions | Yield |
---|---|
With lithium diisopropyl amide In tetrahydrofuran; hexane 1.) -20 deg C, 15 min, 2.) 30 min; | 80.6% |
Conditions | Yield |
---|---|
Stage #1: (R)-5-methyl-2-oxotetrahydrofuran With lithium diisopropyl amide In tetrahydrofuran at -78 - -70℃; for 1h; Inert atmosphere; Stage #2: allyl methyl carbonate With tris(dibenzylideneacetone)dipalladium(0) chloroform complex; (S)-(1,1'-binaphthalene)-2,2'-diylbis(diphenylphosphine); lithium chloride In tetrahydrofuran at -78℃; for 40h; Inert atmosphere; enantioselective reaction; | 76% |
(R)-5-methyl-2-oxotetrahydrofuran
4,5-dihydro-5-methyl-2-(trimethylsiloxy)-3-(trimethylsilyl)furan
Conditions | Yield |
---|---|
according to ref. 7.; | 75% |
(R)-5-methyl-2-oxotetrahydrofuran
(R)-5-Methyl-dihydro-furan-2-thione
Conditions | Yield |
---|---|
With Lawessons reagent In toluene for 4h; Heating; | 65% |
allyl iodid
(R)-5-methyl-2-oxotetrahydrofuran
(S)-3-Allyl-5-methyl-dihydro-furan-2-one
Conditions | Yield |
---|---|
With lithium diisopropyl amide Yield given. Multistep reaction; |
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