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 according to the contract research and development services for the fine chemicals, ph
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inquiry(R)-BETA-METHYL-GAMMA-BUTYROLACTONE CAS:65284-00-6 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 quali
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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
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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
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inquiryWe 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
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inquiryJ&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals
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inquiry1.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.
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inquirybest seller Application:API
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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
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inquirybest seller Application:API
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inquiry(R)-SS-METHYL-?-BUTYROLACTONECASAppearance: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
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inquiryGood Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
best seller Application:API
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inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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inquiryhigh quality besst price manufacturer impurity study CMC, CDMO Application:medical intermediate Port:ShangHai
Cas:65284-00-6
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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
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inquiry, facing global High-tech pharmaceutical raw materials, high value-added new type intermediates fine chemicals custom synthesis, scale-up production and rare chemicals trade. We have experienced research staff, strong technical force, well-equippe
Cas:65284-00-6
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inquiry2(3H)-Furanone,dihydro-4-methyl-, (4R)-Appearance:Off white to slight yellow solid Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By Sea,
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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
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inquiry(R)-BETA-METHYL-GAMMA-BUTYROLACTONE
Cas:65284-00-6
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inquiry(R)-(+)-3-methyl-4-methoxymethyloxybutanenitrile
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With sulfuric acid In acetic acid for 1.5h; Heating; | 93% |
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With lithium borohydride In tetrahydrofuran at 50℃; for 1h; | A 69% B n/a |
methyl (S)-(+)-3-methyl-5-oxohexanoate
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Stage #1: methyl (S)-(+)-3-methyl-5-oxohexanoate With 3-chloro-benzenecarboperoxoic acid In chloroform at 20℃; for 48h; Baeyer-Villager oxidation; Stage #2: With potassium hydroxide In methanol for 4h; Heating; Stage #3: With hydrogenchloride pH=3 - 4; | 68% |
(3R)-4-(tert-butyldimethylsilanyloxy)-3-methylbutyronitrile
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With sulfuric acid In acetic acid Heating; | 60% |
(S)-3-Methyl-4-<(tetrahydropyranyl)oxy>butanenitrile
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With hydrogenchloride In methanol for 7h; Heating; | 46% |
Multi-step reaction with 2 steps 1: aq. HCl / methanol / 4 h / Heating 2: 32.0 g / aq. NaOH / 5 h / Heating View Scheme | |
Multi-step reaction with 2 steps 1: aq. KOH / ethane-1,2-diol / 6 h / Heating 2: aq. HCl / 0.25 h / 100 °C View Scheme |
(R)-4-(iodomethyl)dihydrofuran-2(3H)-one
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With hydrogen; calcium carbonate; Raney Ni W-7 In ethanol for 0.5h; Ambient temperature; | 8.8% |
methyl (R)-3-hydroxy-2-methylpropionate
(R)-3-methyl-γ-butyrolactone
(R)-3-Methyl-4-[((E)-propenyl)oxy]-butyraldehyde
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Jones oxidation; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(R)-(+)-4-tert. butoxy-3-methylbutyric acid
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene for 1.5h; Heating; Yield given. Title compound not separated from byproducts; |
trans-(R)-2-Octen-4-ol
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multistep reaction; |
(R)-4-Hydroxy-3-methyl-N-((R)-1-phenyl-ethyl)-butyramide
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With hydrogenchloride; potassium hydroxide Multistep reaction; |
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
In tetrahydrofuran at -100℃; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(R)-4-Hydroxy-3-methyl-butyric acid
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With hydrogenchloride at 100℃; for 0.25h; Yield given; |
(-)-ethyl (R)-(E)-3,6-dimethyl-4-heptenoate
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With sodium tetrahydroborate; ozone 1.) EtOH, CHCl3, -78 degC; Yield given. Multistep reaction; |
(S)-4-Methyl-2-oxo-tetrahydro-furan-3-carboxylic acid
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
at 180 - 200℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(R)-(+)-3-methyldihydrofuran-2,5-dione
A
(R)-3-methyl-γ-butyrolactone
B
(R)-3-methyl-dihydro-furan-2-one
Conditions | Yield |
---|---|
With hydrogen; magnesium sulfate; triethylamine; Ru2Cl4(DIOP)3 In toluene at 120℃; for 10h; Yield given. Title compound not separated from byproducts; |
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With sodium hydroxide for 5h; Cyclization; Lactonization; Hydrolysis; Heating; | 32.0 g |
(R)-4-hydroxy-3-methyl-butyronitrile
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Stage #1: (R)-4-hydroxy-3-methyl-butyronitrile With sodium hydroxide In ethanol Heating; Stage #2: With toluene-4-sulfonic acid In benzene Heating; |
(E)-4-hydroxy-3-methylbut-2-enoic acid
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Stage #1: (E)-4-hydroxy-3-methylbut-2-enoic acid With chiral ruthenium catalyst; hydrogen; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl Stage #2: With hydrogen cation Further stages.; | |
With Ru(OAc)2((R)-BINAP); hydrogen Title compound not separated from byproducts.; |
4-methyl-2(5H)-furanone
A
(S)-3-methyl-4-butanolide
B
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With sodium tetrahydroborate; methyl-bis-((S)-4-phenyl-4,5-dihydro-oxazol-2-yl)-amine; cobalt(II) chloride In ethanol at 20℃; for 24h; Title compound not separated from byproducts; | |
With C32H12BF24(1-)*C37H44IrN2OP(1+); hydrogen In dichloromethane at 20℃; under 75007.5 Torr; for 24h; optical yield given as %ee; enantioselective reaction; |
(R)-4-(tert-butyl-diphenyl-silanyloxy)-3-methyl-thiobutyric acid S-ethyl ester
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride In tetrahydrofuran for 5h; | |
With tetrabutyl ammonium fluoride In tetrahydrofuran |
4-methyl-2(5H)-furanone
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With Glycine max p51 reductase; NADPH In phosphate buffer at 36℃; for 12h; pH=7.0; |
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride |
3-Methylbutenoic acid
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: 45 percent / SeO2 2.1: H2; BINAP; chiral ruthenium catalyst 2.2: H(1+) View Scheme |
MOM ether of (S)-(+)-methyl 3-hydroxy-2-methylpropionate
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 79 percent / LiAlH4 / diethyl ether / 4 h / Ambient temperature 2: 90 percent / pyridine / 0 - 5 °C 3: 90 percent / dimethylsulfoxide / 50 °C 4: 93 percent / aq. H2SO4 / aq. acetic acid / 1.5 h / Heating View Scheme |
(R)-(+)-2-methyl-3-methoxymethyloxypropan-1-ol
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 90 percent / pyridine / 0 - 5 °C 2: 90 percent / dimethylsulfoxide / 50 °C 3: 93 percent / aq. H2SO4 / aq. acetic acid / 1.5 h / Heating View Scheme |
(S)-(+)-2-methyl-3-methoxymethyloxypropan-1-yl tosylate
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 90 percent / dimethylsulfoxide / 50 °C 2: 93 percent / aq. H2SO4 / aq. acetic acid / 1.5 h / Heating View Scheme |
(R)-(+)-3-methyldihydrofuran-2,5-dione
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1.) calcium sulfate hemihydrate, 2.) molecular sieves 4 Angstroem / 1.) dioxane, 22 deg C, 45 h, lipozyme from Mucor miehei, 2.) cyclohexane, 22 deg C, 43 h, Novozym 435 from Candida antarctica 2: LiBH4 / tetrahydrofuran / 1 h / 50 °C View Scheme | |
Multi-step reaction with 2 steps 1: calcium sulfate hemihydrate / dioxane / 45 h / 22 °C / lipozyme from Mucor miehei 2: LiBH4 / tetrahydrofuran / 1 h / 50 °C View Scheme |
(R)-3-(tetrahydro-2-pyranyloxy)-2-methyl-1-propanol
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 95 percent / pyridine 2: 70 percent / dimethylsulfoxide / 48 h / Ambient temperature 3: 46 percent / conc. HCl / methanol / 7 h / Heating View Scheme |
(S)-3-(tetrahydro-2-pyranyloxy)-2-methylpropyl p-toluenesulfonate
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 70 percent / dimethylsulfoxide / 48 h / Ambient temperature 2: 46 percent / conc. HCl / methanol / 7 h / Heating View Scheme |
(R)-3-methyl-γ-butyrolactone
4-bromo-3-methyl-butyric acid ethyl ester
Conditions | Yield |
---|---|
With hydrogen bromide In ethanol for 16h; Ambient temperature; | 96% |
With hydrogen bromide In ethanol |
ethanol
(R)-3-methyl-γ-butyrolactone
ethyl (R)-(+)-4-bromo-3-methylbutanoate
Conditions | Yield |
---|---|
With hydrogen bromide for 16h; Ambient temperature; | 96% |
Isobutyl iodide
(R)-3-methyl-γ-butyrolactone
(2R)-2,6-dimethylheptan-1-ol
Conditions | Yield |
---|---|
Stage #1: Isobutyl iodide With tert.-butyl lithium In diethyl ether; pentane at -78 - 20℃; Stage #2: (R)-3-methyl-γ-butyrolactone In diethyl ether; pentane at -78℃; for 3h; Further stages; | 79% |
Conditions | Yield |
---|---|
Stage #1: 1-Iodooctane With tert.-butyl lithium In diethyl ether; pentane at -78 - 20℃; for 1.5h; Stage #2: (R)-3-methyl-γ-butyrolactone In diethyl ether; pentane at -78℃; for 3h; Further stages; | 78% |
Conditions | Yield |
---|---|
Stage #1: 1-Iodohexane With tert.-butyl lithium In diethyl ether; pentane at -78 - 20℃; for 1.5h; Stage #2: (R)-3-methyl-γ-butyrolactone In diethyl ether; pentane at -78℃; for 3h; Further stages; | 75% |
(R)-3-methyl-γ-butyrolactone
prenyl bromide
A
(2R,3R)-3-methyl-2-(3-methyl-2-butenyl)-4-butanolide
B
(2S,3R)-3-methyl-2-(3-methyl-2-butenyl)-4-butanolide
Conditions | Yield |
---|---|
With lithium diisopropyl amide 1) THF, -78 deg C, 1 h, 2) -78 deg C, 1 h; Yield given. Multistep reaction. Yields of byproduct given; |
methyl cyanoformate
(R)-3-methyl-γ-butyrolactone
3(R)-carbomethoxy-4(R)-methyldihydro-2(3H)-furanone
Conditions | Yield |
---|---|
With lithium diisopropyl amide 1.) THF, -78 deg C, 1.5 h, 2.) THF, -78 deg C, 3h; Yield given. Multistep reaction; |
eschenmoser's salt
(R)-3-methyl-γ-butyrolactone
Conditions | Yield |
---|---|
With lithium diisopropyl amide 1.) THF, hexane, -78 deg C, 1 h, 2.) THF, hexane, a) -78 deg C, 1 h, b) RT, overnight; Multistep reaction; |
(R)-3-methyl-γ-butyrolactone
(-)-(2E,4R)-5-methyl-2-hexen-4-ol
4(R)-methyl-5(R)-(1(S),4-dimethyl-2(E)-pentenyl)dihydro-2(3H)furanone
Conditions | Yield |
---|---|
Multistep reaction; |
(R)-3-methyl-γ-butyrolactone
(-)-(2E,4R)-5-methyl-2-hexen-4-ol
A
(3R,4S)-3-((E)-(S)-1,4-Dimethyl-pent-2-enyl)-4-methyl-dihydro-furan-2-one
B
4(R)-methyl-3(R)-(1(S),4-dimethyl-2(E)-pentenyl)dihydro-2(3H)-furanone
C
4(S)-methyl-3(S)-(1(S),4-dimethyl-2(E)-pentenyl)dihydro-2(3H)-furanone
D
4(R)-methyl-3(S)-(1(S),4-dimethyl-2(E)-pentenyl)dihydro-2(3H)-furanone
Conditions | Yield |
---|---|
In toluene at 110℃; for 48h; Product distribution; Mechanism; investigation of the steric course Claisen rearrangements of lactone; | |
With acid In toluene at 110℃; for 48h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
(R)-3-methyl-γ-butyrolactone
trans-(R)-2-Octen-4-ol
(3R,4S)-4-Methyl-3-((E)-(S)-1-methyl-hept-2-enyl)-dihydro-furan-2-one
Conditions | Yield |
---|---|
With potassium tert-butylate; tert-butyl alcohol; Trimethylacetic acid 1) toluene, reflux, 2 d, 2) Et2O, 3 h, 25 degC; Yield given. Multistep reaction; |
(R)-3-methyl-γ-butyrolactone
trans-(R)-2-Octen-4-ol
A
4(R)-methyl-3(R)-(1(S)-methyl-2(E)-heptenyl)dihydro-2(3H)-furanone
B
4(R)-methyl-3(S)-(1(S)-methyl-2(E)-heptenyl)dihydro-2(3H)-furanone
Conditions | Yield |
---|---|
Multistep reaction. Title compound not separated from byproducts; |
(R)-3-methyl-γ-butyrolactone
trans-(R)-2-Octen-4-ol
4(R)-methyl-3(S)-(1(S)-methyl-2(E)-heptenyl)dihydro-2(3H)-furanone
Conditions | Yield |
---|---|
Multistep reaction. Title compound not separated from byproducts; |
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