We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:off-white powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as prima
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inquiryAs 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
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inquiryhebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
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inquiryProduct Description Product website: http://www.finerchem.com Product Name (S)-(+)-methyl B-hydroxyisobutyrate CAS No. 80657-57-4
Cas:80657-57-4
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inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
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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
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inquiryMETHYL (S)-(+)-3-HYDROXY-2-METHYLPROPIONATE CAS:80657-57-4 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 hi
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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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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
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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
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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
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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
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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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Min.Order:10 Gram
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inquirySuperior quality, moderate price & quick delivery. Appearance:Clear colorless liquid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used in o
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inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
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inquiryProduct Name: METHYL (S)-(+)-3-HYDROXY-2-METHYLPROPIONATE Synonyms: (S)-(+)-3-HYDROXY-2-METHYLPROPIONIC ACID METHYL ESTER;(S)-3-HYDROXY-2-METHYLPROPIONIC ACID METHYL ESTER;(S)-(+)-3-HYDROXYISOBUTYRIC ACID METHYL ESTER;methyl (S)-(+)-3-hydroxy-2
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Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
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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
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inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
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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
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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
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
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inquiryGood quantity Storage:R.T. Package:as per buyers Application:intermediate Transportation:by air/sea
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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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inquiryFactory supply high purity low priceAppearance: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
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inquiryBest quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
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inquiryPropanoic acid,3-hydroxy-2-methyl-, methyl ester, (2S)-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express
Cas:80657-57-4
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Negotiable
Type:Other
inquirymethyl 2-hydroxymethylacrylate
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With diisopropyl{1-[(S)-3,5-dioxa-4-phospha-cyclohepta(2,1-a;3,4-a')dinaphthalen-4-yl]-3-methyl-2-indolyl}phosphine; bis(norbornadiene)rhodium(l)tetrafluoroborate; hydrogen In dichloromethane at -40℃; under 15001.5 Torr; for 15h; Reactivity; Pressure; Temperature; Concentration; Inert atmosphere; optical yield given as %ee; enantioselective reaction; | 87% |
With N-methyl-N-{(S)-1-[2-(diphenylphosphino)phenyl]ethyl}-(S)-1,10-bi-2-naphthylphosphoramidite; bis(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate; hydrogen In dichloromethane at 20℃; under 7500.75 Torr; for 24h; optical yield given as %ee; | |
With BF4(1-)*C8H10Rh(1+)*C17H27NO2P2; hydrogen In dichloromethane at 25℃; under 750.075 Torr; for 1.5h; Inert atmosphere; optical yield given as %ee; enantioselective reaction; |
(S)-3-acetoxy-2-methyl-propionic acid methyl ester
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With potassium carbonate In methanol at 5 - 10℃; for 1h; | 75% |
With potassium carbonate In methanol at 0 - 5℃; | 75% |
diazomethane
3-hydroxyisobutyric acid
A
3-hydroxy-(2S)-methylpropionate
B
methyl (R)-3-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
In diethyl ether Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
diazomethane
(S)-(+)-3-hydroxy-2-methyl-propanoic acid
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
In diethyl ether | |
In diethyl ether 1.)0 deg C, 2 h, 2.)r.t., overnight; Yield given; |
methyl 3-hydroxy-2-methylpropanoate
3-hydroxy-(2S)-methylpropionate
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With sodium hydroxide und Behandeln der nach dem Ansaeuern erhaltenen Saeure mit Diazomethan in Aether; |
methyl 2-hydroxymethylacrylate
A
3-hydroxy-(2S)-methylpropionate
B
methyl (R)-3-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
With hydrogen; {(-)-1,2-bis(2R,5R)-2,5-dimethylphospholanobenzene(cyclooctadiene)rhodium(l)} triflate In methanol at 30℃; under 3000.3 Torr; Product distribution; Further Variations:; Catalysts; | |
With hydrogen; Ru(cod)(η3-methylallyl)2/(R)-SYNPHOS/HBF4 In methanol at 50℃; under 15001.5 Torr; for 23h; Title compound not separated from byproducts.; | |
With hydrogen; p-benzoquinone; [RuH(η6-cycloocta-1,3,5-triene)(S)-SYNPHOS]BF4 In methanol at 15℃; under 15001.5 Torr; for 23h; Title compound not separated from byproducts.; |
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With 2,3-dicyano-5,6-dichloro-p-benzoquinone In dichloromethane; water at 0 - 20℃; for 2h; | 35 mg |
methyl 3-hydroxy-2-methylpropanoate
A
3-hydroxy-(2S)-methylpropionate
B
methyl (R)-3-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
With [Rh(dppb)(COD)]BF4; hydrogen In methanol at 20℃; under 45004.5 Torr; for 20h; | |
With capillary column subsequently coated with 1) Co(d-Cam)1/2(bdc)1/2(tmdpy) (d-Cam=d-camphoric acid,bdc=1,4-benzenedicarboxylic acid, tmdpy=4,4’-trimethylenedipyridine), 2) peramylated β-cyclodextrin at 93℃; Reagent/catalyst; Resolution of racemate; |
3,4-dihydro-2H-pyran
3-hydroxy-(2S)-methylpropionate
methyl 2(S)-methyl-3-tetrahydropyranyloxypropanoate
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane at 25℃; for 3h; | 100% |
With toluene-4-sulfonic acid In diethyl ether | 100% |
With toluene-4-sulfonic acid In diethyl ether | 100% |
Benzyloxymethyl chloride
3-hydroxy-(2S)-methylpropionate
(S)-(+)-(benzyloxy)methyl 3-<(benzyloxy)methoxy>-2-methylpropionate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine for 12h; 0 deg C --> room temperature; | 100% |
With N-ethyl-N,N-diisopropylamine at 0℃; for 2h; | 80% |
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0 - 20℃; for 8.5h; | 70% |
3-hydroxy-(2S)-methylpropionate
triisopropylsilyl chloride
(S)-methyl 2-methyl-3-(triisopropylsilyloxy)propanoate
Conditions | Yield |
---|---|
With 1H-imidazole; dmap In dichloromethane at 20℃; for 2h; | 100% |
With 1H-imidazole; dmap In dichloromethane at 0 - 20℃; | 99% |
With dmap; triethylamine In dichloromethane at 0 - 20℃; for 48h; Inert atmosphere; | 98% |
With 1H-imidazole; dmap In dichloromethane at 20℃; for 1.5h; | |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; |
3-hydroxy-(2S)-methylpropionate
tert-butyldimethylsilyl chloride
(S)-3-(tert-butyldimethylsilyloxy)-2-methylpropionic acid methyl ester
Conditions | Yield |
---|---|
With 1H-imidazole | 100% |
With 1H-imidazole In N,N-dimethyl-formamide Substitution; | 100% |
With 1H-imidazole In N,N-dimethyl-formamide | 100% |
3-hydroxy-(2S)-methylpropionate
tert-butylchlorodiphenylsilane
(S)-3-(tert-butyl-diphenyl-silanyloxy)-2-methyl-propionic acid methyl ester
Conditions | Yield |
---|---|
With Imd | 100% |
With N-ethyl-N,N-diisopropylamine In dichloromethane | 100% |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; | 100% |
3-hydroxy-(2S)-methylpropionate
methanesulfonyl chloride
methyl (2S)-3-hydroxy-2-methyl-3-(methylsulfonyloxy)propanoate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane | 100% |
With triethylamine In dichloromethane at 0℃; for 1h; | 100% |
With triethylamine | 91% |
With triethylamine In dichloromethane at 0 - 20℃; for 1h; |
3-hydroxy-(2S)-methylpropionate
diphenyldisulfane
(R)-2-methyl-3-(phenylsulfanyl)propanoic acid methyl ester
Conditions | Yield |
---|---|
With tributylphosphine In tetrahydrofuran at 20℃; for 24h; | 100% |
With tributylphosphine In tetrahydrofuran for 24h; Ambient temperature; | 99% |
With tributylphosphine In N,N-dimethyl-formamide at 0 - 20℃; for 4h; | 85% |
With tributylphosphine In N,N-dimethyl-formamide at 0 - 25℃; for 5h; Yield given; |
3-hydroxy-(2S)-methylpropionate
trifluoromethylsulfonic anhydride
Conditions | Yield |
---|---|
With 2,6-dimethylpyridine In dichloromethane at 0℃; for 0.25h; | 100% |
With 2,6-dimethylpyridine In dichloromethane at 0℃; for 0.25h; | |
With 2,6-dimethylpyridine In dichloromethane at 5℃; for 1h; |
3-hydroxy-(2S)-methylpropionate
O-(4-methoxybenzyl)-trichloroacetimidate
methyl (2S)-[(4-methoxybenzyl)oxy]-2-methylpropanoate
Conditions | Yield |
---|---|
With camphor-10-sulfonic acid In dichloromethane for 16h; Inert atmosphere; | 99% |
With camphor-10-sulfonic acid In dichloromethane for 16h; Inert atmosphere; Schlenk technique; | 99% |
With (1S)-10-camphorsulfonic acid In dichloromethane for 16h; Inert atmosphere; | 99% |
3-hydroxy-(2S)-methylpropionate
benzyl trityl ether
(2S)-2-methyl-3-(trityloxy)propionic acid methyl ester
Conditions | Yield |
---|---|
With 4 A molecular sieve; 2,3-dicyano-5,6-dichloro-p-benzoquinone In dichloromethane at 30℃; for 36h; | 99% |
3-hydroxy-(2S)-methylpropionate
acetic anhydride
(S)-3-acetoxy-2-methyl-propionic acid methyl ester
Conditions | Yield |
---|---|
zinc(II) perchlorate at 20℃; for 4.5h; | 99% |
With magnesium(II) perchlorate at 20℃; for 3h; | 95% |
3-hydroxy-(2S)-methylpropionate
4-methyl-benzoyl chloride
Conditions | Yield |
---|---|
With 4-vinylpyridine In dichloromethane at 20℃; for 6h; | 99% |
3-hydroxy-(2S)-methylpropionate
(S)-3-(tert-butyl-diphenyl-silanyloxy)-2-methyl-propionic acid methyl ester
Conditions | Yield |
---|---|
With 1H-imidazole; tert-butylchlorodiphenylsilane In dichloromethane | 99% |
3-hydroxy-(2S)-methylpropionate
triethylsilyl chloride
methyl (S)-2-methyl-3-<(triethylsilyl)oxy>propanoate
Conditions | Yield |
---|---|
With 1H-imidazole; dmap In dichloromethane for 2h; Ambient temperature; | 98% |
With 1H-imidazole; dmap In N,N-dimethyl-formamide | 90% |
With 1H-imidazole; dmap In dichloromethane at 0 - 20℃; for 4h; | 90% |
3-hydroxy-(2S)-methylpropionate
O-benzyl 2,2,2-trichloroacetimidate
methyl (S)-3-benzyloxy-2-methylpropanoate
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane for 38h; Inert atmosphere; | 98% |
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane for 18h; Ambient temperature; | 97% |
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane for 18h; Ambient temperature; | 97% |
3-hydroxy-(2S)-methylpropionate
tert-butyldimethylsilyl chloride
Conditions | Yield |
---|---|
With 1H-imidazole In dichloromethane at 25℃; for 24h; | 98% |
3-hydroxy-(2S)-methylpropionate
ethyl vinyl ether
Methyl (S)-(+)-3-(1-ethoxyethoxy)-2-methylpropanoate
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane at 25℃; for 0.5h; | 98% |
3-hydroxy-(2S)-methylpropionate
p-toluenesulfonyl chloride
(2S)-(+)-2-methyl-3-(toluene-4-sulfonyloxy)propionic acid methyl ester
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 12h; | 98% |
With dmap; triethylamine In dichloromethane at 0 - 20℃; for 20h; | 96% |
With dmap; triethylamine In dichloromethane at 20℃; for 20h; | 96% |
3-hydroxy-(2S)-methylpropionate
4-Methoxybenzyl alcohol
methyl (2S)-[(4-methoxybenzyl)oxy]-2-methylpropanoate
Conditions | Yield |
---|---|
Stage #1: 4-Methoxybenzyl alcohol With sodium hydride In diethyl ether; mineral oil for 0.75h; Inert atmosphere; Stage #2: With trichloroacetonitrile In diethyl ether; mineral oil at 0 - 20℃; Inert atmosphere; Stage #3: 3-hydroxy-(2S)-methylpropionate With camphor-10-sulfonic acid In dichloromethane for 2h; | 98% |
Stage #1: 4-Methoxybenzyl alcohol With sodium hydride; trichloroacetonitrile In diethyl ether; hexane at -5 - 20℃; for 4h; Stage #2: 3-hydroxy-(2S)-methylpropionate; trifluorormethanesulfonic acid In dichloromethane Further stages.; | 94% |
With (1S)-(+)-10-camphorsulfonic acid; sodium hydride; trichloroacetonitrile In dichloromethane; cyclohexane |
3-hydroxy-(2S)-methylpropionate
methyl (2S)-[(4-methoxybenzyl)oxy]-2-methylpropanoate
Conditions | Yield |
---|---|
With camphor-10-sulfonic acid In dichloromethane at 25℃; Inert atmosphere; | 98% |
3-hydroxy-(2S)-methylpropionate
trityl chloride
(2S)-2-methyl-3-(trityloxy)propionic acid methyl ester
Conditions | Yield |
---|---|
97% | |
With dmap; triethylamine In dichloromethane at 20℃; for 12h; | 96% |
95% |
isobutyl vinyl ether
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With sodium hydroxide; pyridinium p-toluenesulfonate In water | 97% |
3-hydroxy-(2S)-methylpropionate
tert-butyldimethylsilyl chloride
(2S)-3-(tert-butyl-dimethyl-silyloxy)-2-methyl-propanal
Conditions | Yield |
---|---|
Stage #1: 3-hydroxy-(2S)-methylpropionate; tert-butyldimethylsilyl chloride With 1H-imidazole In N,N-dimethyl-formamide at 0 - 23℃; Stage #2: With diisobutylaluminium hydride In dichloromethane at -78℃; | 97% |
3-hydroxy-(2S)-methylpropionate
N-(4-methoxybenzyl)-2,2,2-trichloroacetamide
methyl (2S)-[(4-methoxybenzyl)oxy]-2-methylpropanoate
Conditions | Yield |
---|---|
95% | |
With trifluorormethanesulfonic acid In diethyl ether at -78 - 20℃; for 2.5h; Inert atmosphere; | 83% |
3-hydroxy-(2S)-methylpropionate
2-Methoxypropene
Methyl 3-(1-Methoxy-1-methyl)ethoxy-2-(S)-methylpropionate
Conditions | Yield |
---|---|
With pyridinium p-toluenesulfonate In dichloromethane at 0℃; for 0.25h; Etherification; | 95% |
With pyridinium p-toluenesulfonate In dichloromethane |
3-hydroxy-(2S)-methylpropionate
methyl (S)-3-benzyloxy-2-methylpropanoate
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid In dichloromethane; cyclohexane at 0 - 20℃; | 95% |
3-hydroxy-(2S)-methylpropionate
p-toluenesulfonyl chloride
(S)-O-p-toluenesulfonyl-3-hydroxy-2-methylpropanal
Conditions | Yield |
---|---|
Stage #1: 3-hydroxy-(2S)-methylpropionate; p-toluenesulfonyl chloride With dmap; triethylamine In dichloromethane at 20℃; for 12h; Stage #2: With diisobutylaluminium hydride In toluene at -90℃; for 1h; | 95% |
3-hydroxy-(2S)-methylpropionate
chloromethyl methyl ether
MOM ether of (S)-(+)-methyl 3-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane | 94% |
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide | |
With diisopropylamine In dichloromethane at 20℃; |
3-hydroxy-(2S)-methylpropionate
N-[(tert-butoxy)carbonyl]-4-methylbenzenesulfonamide
methyl (2S)-3-[N-(tert-butoxycarbonyl)-N-(4-methylphenylsulfonyl)]amino-2-methylpropanoate
Conditions | Yield |
---|---|
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 0 - 20℃; Mitsunobu reaction; Inert atmosphere; | 94% |
3,4-dihydro-2H-pyran
3-hydroxy-(2S)-methylpropionate
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In diethyl ether at 20℃; for 12h; | 93% |
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