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; |
This chemical is called Ethyl (S)-3-hydroxybutyrate, and its CAS registry number is 56816-01-4. With the molecular formula of C6H12O3, its product categories are Alcohols, Hydroxy Esters and Derivatives; Chiral Compounds; Chiral Building Blocks; Simple Alcohols (Chiral); Synthetic Organic Chemistry; Organic Building Blocks; Chiral Alcohols. In addition, this chemical should be sealed in the cool and dry place.
Other characteristics of the Ethyl (S)-3-hydroxybutyrate can be summarised as followings: (1)ACD/LogP: -0.02; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 3; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 5; (6)Polar Surface Area: 35.53 Å2; (7)Index of Refraction: 1.427; (8)Molar Refractivity: 33.11 cm3; (9)Molar Volume: 128.9 cm3; (10)Polarizability: 13.12×10-24cm3; (11)Surface Tension: 33.2 dyne/cm; (12)Density: 1.024 g/cm3; (13)Flash Point: 64.4 °C; (14)Enthalpy of Vaporization: 47.89 kJ/mol; (15)Boiling Point: 175 °C at 760 mmHg; (16)Vapour Pressure: 0.362 mmHg at 25°C.
When you are using this chemical, please be cautious about it as the following: Don't breathe vapour. Avoid contacting with skin and eyes.
You can still convert the following datas into molecular structure:
1.SMILES: O=C(OCC)C[C@@H](O)C
2.InChI: InChI=1/C6H12O3/c1-3-9-6(8)4-5(2)7/h5,7H,3-4H2,1-2H3/t5-/m0/s1
3.InChIKey: OMSUIQOIVADKIM-YFKPBYRVBT
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