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Cas:56816-01-4
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inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
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inquiryhigh quality Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai
Cas:56816-01-4
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inquiryThe 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
Cas:56816-01-4
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Cas:56816-01-4
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inquiryOur advantage:Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scient
Cas:56816-01-4
Min.Order:1 Gram
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inquiryWITH 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
Cas:56816-01-4
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inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam
Cas:56816-01-4
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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:56816-01-4
Min.Order:1 Kilogram
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inquiryEthyl (S)-3-hydroxybutyrate CAS:56816-01-4 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 orga
Cas:56816-01-4
Min.Order:1 Gram
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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
Cas:56816-01-4
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inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures s
Cas:56816-01-4
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inquiryOur 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
Cas:56816-01-4
Min.Order:10 Kilogram
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inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present
Cas:56816-01-4
Min.Order:1 Gram
FOB Price: $106.0
Type:Trading Company
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:56816-01-4
Min.Order:1 Gram
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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:56816-01-4
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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:56816-01-4
Min.Order:4 Kilogram
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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
Cas:56816-01-4
Min.Order:10 Gram
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inquiry1)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 etc. 3) oem/odm available; 4) rea
Cas:56816-01-4
Min.Order:1 Gram
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inquiryProduct Name: Ethyl (S)-3-hydroxybutyrate Synonyms: (3S)-3-Hydroxybutanoic acid ethyl;(3S)-3-Hydroxybutyric acid ethyl;(S)-3-Hydroxybutanoic acid ethyl;(S)-3-Hydroxybutyric acid ethyl;Ethyl (S)-(+)-3-Hydroxybutyrate;(R)-2-HEPTANOL EE 97+%;Buta
Cas:56816-01-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryfactory?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:56816-01-4
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
Cas:56816-01-4
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry1.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:56816-01-4
Min.Order:1 Metric Ton
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inquiryProduct name Ethyl (S)-3-hydroxybutyrate Content ≥98% CAS NO. 56816-01-4 Package Structure Formula Appearance:Detai
Cas:56816-01-4
Min.Order:1 Gram
Negotiable
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
Cas:56816-01-4
Min.Order:0
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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:56816-01-4
Min.Order:1 Metric Ton
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Type:Trading Company
inquiry1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification
Cas:56816-01-4
Min.Order:0
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Type:Trading Company
inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:56816-01-4
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
ethyl acetoacetate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With [NEt2H2]-[{RuCl(S)-BINAP}2(μ-Cl)3]; hydrogen In methanol; ethanol at 50℃; under 22801.5 Torr; for 12h; Inert atmosphere; Autoclave; optical yield given as %ee; | 100% |
With hydrogen In ethanol at 80℃; under 15001.5 Torr; for 10h; enantioselective reaction; | 99.5% |
With C32H40F6O6P2Pd; hydrogen In acetone at 0℃; under 23272.3 Torr; for 12h; Autoclave; enantioselective reaction; | 99% |
ethyl 3-hydroxybutyrate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With alcohol dehydrogenase from Lactobacillus kefir; alcohol dehydrogenase from Rhodococcus ruber DSM 44541; YcnD-oxidoreductase at 30℃; for 6h; pH=7.5; aq. buffer; Resolution of racemate; Enzymatic reaction; optical yield given as %ee; enantiospecific reaction; | 99% |
With Alcaligenes faecalis DSM 13975 cells; alcohol dehydrogenase from Rhodococcus erythropolis; glucose dehydrogenase BS; D-glucose; nicotinamide adenine dinucleotide In alkaline aq. solution at 30℃; for 16h; pH=7.5; |
ethyl (3S)-3-{[tert-butyl(dimethyl)silyl]oxy}butanoate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With cerium(III) chloride; sodium iodide In acetonitrile for 3h; Heating; | 95% |
ethanol
carbon monoxide
(S)-Propylene oxide
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; 4-aminopyridine; dicobalt octacarbonyl at 40℃; under 7500.75 Torr; for 24h; | 92% |
With 1,1-dimethyl-3,3-diethylguanidinecarbonylcobalt at 80℃; under 45004.5 Torr; for 24h; Autoclave; |
ethyl (+/-)-3-(3',5'-dinitrobenzoyloxy)butanoate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With titanium(IV) tetraethanolate In ethanol at 78℃; for 96h; | 90% |
(S)-3-(3',5'-Dinitrobenzoyloxy)-buttersaeureaethylester
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With potassium hydroxide In tetrahydrofuran; ethanol | 90% |
With potassium hydroxide In tetrahydrofuran; ethanol at -5 - 0℃; for 1h; | 89% |
With potassium hydroxide | 79% |
With potassium hydroxide In tetrahydrofuran; ethanol at 0℃; for 0.833333h; | 113 mg |
Conditions | Yield |
---|---|
With titanium(IV) isopropylate for 2h; Inert atmosphere; Reflux; | 90% |
Conditions | Yield |
---|---|
With erbium(III) triflate at 4℃; for 20h; | 89% |
ethanol
(R)-(-)-3-hydroxy-4,4,4-trichlorobutyric β-lactone
A
ethyl (S)-3-hydroxybutyrate
B
ethyl (L)-4-chloro-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; potassium acetate; palladium on activated charcoal at 25℃; for 80h; | A n/a B 88% |
ethyl acetoacetate
A
Ethyl (R)-3-hydroxybutanoate
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With citrate-phosphate-borate buffer for 24h; Ambient temperature; baker's yeast immobilized in calcium alginate; Title compound not separated from byproducts; | A n/a B 85% |
With Convolvulus sepium for 120h; pH=5.8; aq. phosphate buffer; optical yield given as %ee; | A n/a B 70% |
yeast Conversion of starting material; Enzymatic reaction; | A n/a B 26% |
ethyl 3-hydroxybutyrate
vinyl n-butyrate
A
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With 4 Angstroem MS; porcin pancreatic lipase In toluene 1.) 37 deg C, 16 h; 2.) 55 deg C, 24 h; | A 83% B n/a |
lipase P from Pseudomonas In toluene at 65℃; for 42h; | A 80.5% B n/a |
(-)-(R)-Ethyl 3-(mesyloxy)butanoate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With calcium carbonate In water at 80℃; for 3h; Inert atmosphere; | 82% |
With water; calcium carbonate | 70% |
Conditions | Yield |
---|---|
With sulfuric acid | 73% |
With sulfuric acid | 73% |
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; Raney-Ni (W4) In ethanol | 68% |
(S)-3-Hydroxy-dithiobutyric acid methyl ester
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With CuCl2-CuO In ethanol for 24h; Ambient temperature; | 62% |
(2E,4E)-7-(t-Butyl-dimethylsilyloxy)-2,4-octadiensaeuremethylester
A
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogenchloride In tetrahydrofuran at 30℃; for 3h; | A 58% B 22% |
ethanol
(S)-3-(1-ethoxyethoxy)butyronitrile
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogenchloride; water for 3h; | 47% |
With hydrogenchloride |
3-(Naphthalen-1-ylcarbamoyloxy)-butyric acid ethyl ester
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With titanium(IV) tetraethanolate In ethanol at 130℃; under 3800 Torr; for 120h; | 45% |
ethyl 2-chloro-3-oxo-butyrate
A
ethyl (S)-3-hydroxybutyrate
B
ethyl (2R,3S)-2-chloro-3-hydroxybutanoate
Conditions | Yield |
---|---|
Baker's yeast; | A n/a B 40% |
ethyl 3-hydroxybutyrate
A
(R)-3-hydroxybutyric acid
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With sodium hydroxide In water at 30℃; pH=6.9; | A n/a B 36.4% |
ethyl acetoacetate
A
ethyl (S)-3-hydroxybutyrate
B
3,3-bismethoxybutyric acid methyl ester
Conditions | Yield |
---|---|
With <(-)-2,2'-bis(diphenylphosphino)-3,3'-bibenzothiophene>RuCl2; hydrogen In methanol at 70℃; under 73550.8 Torr; for 2h; Yield given; | A n/a B 5% |
ethyl 3-hydroxybutyrate
A
Ethyl (R)-3-hydroxybutanoate
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With pentyl cage-coated capillary column Resolution of racemate; | |
With homochiral metal-organic cage [Zn3(deprotonated [3+3] macrocyclic Schiff base of trans-1,2-diaminocyclohexane and 4-tert-butyl-2,6-diformylphenol)2] coated capillary column In dichloromethane at 118℃; Resolution of racemate; enantioselective reaction; |
ethyl acetoacetate
A
(S)-3-Hydroxybutanoic Acid
B
(R)-3-hydroxybutyric acid
C
Ethyl (R)-3-hydroxybutanoate
D
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With Halobacterium halobium; pepton; potassium chloride; water; sodium citrate; magnesium sulfate; sodium chloride at 40℃; for 120h; Irradiation; Yields of byproduct given. Title compound not separated from byproducts; | |
With Halobacterium halobium; pepton; potassium chloride; sodium citrate; magnesium sulfate; sodium chloride In water at 40℃; for 120h; Irradiation; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
ethyl 3-nitro-oxy-butanoate
A
Ethyl (R)-3-hydroxybutanoate
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In methanol Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With aluminum amalgam Yield given; | |
With aluminium amalgam Yield given; |
ethyl (3R)-4,4,4-trichloro-3-hydroxybutanoate
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; potassium carbonate; palladium on activated charcoal In methanol under 2280 Torr; |
ethanol
(R)-(-)-3-hydroxy-4,4,4-trichlorobutyric β-lactone
A
ethyl (S)-3-hydroxybutyrate
B
ethyl (L)-4-chloro-3-hydroxybutyrate
Conditions | Yield |
---|---|
With hydrogen; potassium acetate; palladium on activated charcoal at 25℃; for 80h; Product distribution; other reagents, catalysts, and reaction times; | A 7 % Chromat. B 87 % Chromat. C 6 % Chromat. |
ethanol
A
ethyl (S)-3-hydroxybutyrate
B
ethyl (S)-3-hydroxyvalerate
C
ethyl (E)-crotonate
Conditions | Yield |
---|---|
Multistep reaction. Title compound not separated from byproducts; |
trans-Crotonaldehyde
ethanol
A
Ethyl (R)-3-hydroxybutanoate
B
ethyl (S)-3-hydroxybutyrate
Conditions | Yield |
---|---|
Stage #1: trans-Crotonaldehyde; ethanol With dihydrogen peroxide In chloroform at -20℃; for 16h; Stage #2: With N-ethyl-N,N-diisopropylamine In chloroform at 30℃; for 15h; Further stages. Title compound not separated from byproducts.; |
Isopropenyl acetate
ethyl 3-hydroxybutyrate
A
ethyl (S)-3-hydroxybutyrate
B
(R)-3-Acetoxybuttersaeure-ethylester
Conditions | Yield |
---|---|
With Candida antarctica lipase B at 23℃; Title compound not separated from byproducts.; |
3,4-dihydro-2H-pyran
ethyl (S)-3-hydroxybutyrate
(3S)-3-<<(2R,S)-3,4,5,6-Tetrahydro-2H-pyran-2-yl>oxy>buttersaeure-ethylester
Conditions | Yield |
---|---|
100% | |
With pyridinium p-toluenesulfonate In dichloromethane for 2.5h; Reflux; | 98% |
With toluene-4-sulfonic acid In diethyl ether 1.) 0 deg C, 2.5 h, 2.) RT, 0.5 h; | 97% |
ethyl (S)-3-hydroxybutyrate
tert-butyldimethylsilyl chloride
ethyl (3S)-3-{[tert-butyl(dimethyl)silyl]oxy}butanoate
Conditions | Yield |
---|---|
With 1H-imidazole In dichloromethane at 0 - 23℃; | 100% |
With 1H-imidazole In dichloromethane at 20℃; for 12h; | 100% |
With 1H-imidazole In dichloromethane at 0 - 20℃; Inert atmosphere; | 98% |
ethyl (S)-3-hydroxybutyrate
ethyl vinyl ether
(3S)-3-(1'-Aethoxyaethoxy)buttersaeure-aethylester
Conditions | Yield |
---|---|
With trifluoroacetic acid for 48h; Ambient temperature; | 98% |
With trifluoroacetic acid 1.) a) -5 deg C, 18 h, b) 20 deg C, 2 h; | 93% |
trifluoroacetic acid 0 deg C, 2 h, then 5 deg C, 16 h; |
ethyl (S)-3-hydroxybutyrate
ethyl chloromethyl ether
(S)-ethyl 3-(ethoxymethoxy)butanoate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃; for 17h; Inert atmosphere; | 98% |
90% |
ethyl (S)-3-hydroxybutyrate
tert-butylchlorodiphenylsilane
C22H30O3Si
Conditions | Yield |
---|---|
With 1H-imidazole In dichloromethane at 20℃; for 18h; | 97% |
ethyl (S)-3-hydroxybutyrate
methanesulfonyl chloride
(S)-ethyl 3-mesyloxybutyrate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 0℃; for 2h; | 96.07% |
With triethylamine In dichloromethane at 0 - 25℃; for 2h; Inert atmosphere; |
ethyl (S)-3-hydroxybutyrate
L(+)-3-hydroxy-butyric acid hydrazide
Conditions | Yield |
---|---|
With hydrazine hydrate In ethanol; water for 1h; Heating; | 94% |
ethyl (S)-3-hydroxybutyrate
methyl iodide
ethyl (2S,3S)-3-hydroxy-2-methylbutanoate
Conditions | Yield |
---|---|
Stage #1: ethyl (S)-3-hydroxybutyrate With lithium diisopropyl amide In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -78 - -40℃; Frater-Seebach alkylation; Inert atmosphere; Stage #2: methyl iodide In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -78 - 0℃; for 2h; Frater-Seebach alkylation; Inert atmosphere; | 92% |
Stage #1: ethyl (S)-3-hydroxybutyrate With lithium diisopropyl amide In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -78 - -40℃; Frater-Seebach alkylation; Inert atmosphere; Stage #2: methyl iodide In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -78 - 0℃; for 2h; Frater-Seebach alkylation; Inert atmosphere; optical yield given as %de; | 92% |
Stage #1: ethyl (S)-3-hydroxybutyrate With N,N,N,N,N,N-hexamethylphosphoric triamide; lithium diisopropyl amide In tetrahydrofuran; hexane at -78 - -40℃; for 0.333333h; Inert atmosphere; Stage #2: methyl iodide In tetrahydrofuran; hexane at -78 - 0℃; for 3h; Inert atmosphere; | 82% |
Dimethoxymethane
ethyl (S)-3-hydroxybutyrate
ethyl (3S)-3-(methoxymethoxy)butanoate
Conditions | Yield |
---|---|
With iodine; allyl-trimethyl-silane at 20℃; transacetalization; | 90% |
With iodine; allyl-trimethyl-silane at 20℃; |
ethyl (S)-3-hydroxybutyrate
(+)-butane-1,3-diol
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride In tetrahydrofuran for 30h; Heating; | 89% |
ethyl (S)-3-hydroxybutyrate
chloromethyl methyl ether
ethyl (3S)-3-(methoxymethoxy)butanoate
Conditions | Yield |
---|---|
With N,N-diethylaniline at 25℃; for 72h; | 89% |
With N-ethyl-N,N-diisopropylamine In dichloromethane at 0℃; | 84% |
ethyl (S)-3-hydroxybutyrate
2-[(4-methoxybenzyl)oxy]-3-nitropyridine
(S)-3-(4-Methoxy-benzyloxy)-butyric acid ethyl ester
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at 20℃; for 0.166667h; | 89% |
ethyl (S)-3-hydroxybutyrate
4-methoxybenzyl-2-pyridylthio carbonate
(S)-3-(4-Methoxy-benzyloxy)-butyric acid ethyl ester
Conditions | Yield |
---|---|
With silver trifluoromethanesulfonate In dichloromethane for 0.666667h; Ambient temperature; | 88% |
ethyl (S)-3-hydroxybutyrate
O-benzyl 2,2,2-trichloroacetimidate
(R)-3-(benzyloxy)butanoic acid ethyl ester
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane at 20℃; for 1h; | 87% |
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane for 36h; Ambient temperature; | 83% |
With trifluorormethanesulfonic acid | 78% |
acetic acid tert-butyl ester
ethyl (S)-3-hydroxybutyrate
(+)-(5S)-hydroxy-5-oxo-3-hexanoate de tert-butyle
Conditions | Yield |
---|---|
With lithium diisopropyl amide In tetrahydrofuran Claisen condensation; | 86% |
With lithium diisopropyl amide 1.) THF/hexane, -75 deg C, 20 min, 2.) THF, -50 deg C, 2 h; Yield given. Multistep reaction; |
ethyl (S)-3-hydroxybutyrate
(2S,1'S)-2-(1-hydroxyethyl)-pent-4-enoate d'ethyle
Conditions | Yield |
---|---|
85.2% |
ethyl (S)-3-hydroxybutyrate
allyl bromide
(2S,1'S)-2-(1-hydroxyethyl)-pent-4-enoate d'ethyle
Conditions | Yield |
---|---|
With lithium hexamethyldisilazane In tetrahydrofuran at -70℃; Inert atmosphere; | 85% |
80% | |
(i) LDA, THF, (ii) /BRN= 605308/, HMPT; Multistep reaction; |
ethyl (S)-3-hydroxybutyrate
benzyl bromide
(R)-3-(benzyloxy)butanoic acid ethyl ester
Conditions | Yield |
---|---|
With silver(l) oxide In diethyl ether at 40℃; Inert atmosphere; | 85% |
With silver(l) oxide In diethyl ether | 31% |
ethyl (S)-3-hydroxybutyrate
1,3-butanediol
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride In diethyl ether for 6h; | 85% |
With lithium aluminium tetrahydride In diethyl ether | 82% |
With lithium borohydride In methanol; diethyl ether at 20℃; Cooling with ice; | 74% |
With lithium aluminium tetrahydride In tetrahydrofuran for 2.5h; Ambient temperature; | 66% |
With lithium aluminium tetrahydride In tetrahydrofuran |
ethyl (S)-3-hydroxybutyrate
p-toluenesulfonyl chloride
ethyl (S)-3-tosyloxy-butanoate
Conditions | Yield |
---|---|
With pyridine; dmap at 0 - 20℃; for 5.5h; | 85% |
With pyridine In chloroform | 78% |
With pyridine In chloroform at 0℃; for 12h; |
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