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isopropylmagnesium chloride
oxalic acid diethyl ester
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
With sodium hydroxide 1.) ether/CH2Cl2, -10 to 5 deg C, 2.) H2O, 5 deg C; Yield given. Multistep reaction; |
ethyl 3-methyl-2-oxobutanoate
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
With lithium hydroxide; water In tetrahydrofuran at 20℃; |
sodium 3-methyl-2-oxobutyrate
(S)-(15)N-2-amino-3-methyl butanoic acid
Conditions | Yield |
---|---|
With ammonium-15N hydrochloride; NAD; recombinant glucose dehydrogenase from Bacillus subtilis; recombinant galactomutarotase from Escherichia coli In sodium hydroxide at 30℃; pH=8.0 - 8.2; | 90% |
With formate dehydrogenase; 1,4-dihydronicotinamide adenine dinucleotide; 15N-ammonium formate; leucine dehydrogenase; diothiothreitol Ambient temperature; TRIS, pH=6.5-7.0, 0.1M HCl; | 84% |
N-methylphthalimide
sodium 3-methyl-2-oxobutyrate
3-hydroxy-3-isopropyl-2-methyl-2,3-dihydroisoindol-1-one
Conditions | Yield |
---|---|
In water; acetone at 15℃; Irradiation; | 86% |
In water; acetone at 15℃; Alkylation; UV-irradiation; | 86% |
sodium 3-methyl-2-oxobutyrate
(R)-2-Hydroxy-3-methylbutyric acid
Conditions | Yield |
---|---|
With phosphate buffer; D-glucose; 2-hydroxyethanethiol; sodium chloride; formate dehydrogenase; 1,4-dihydronicotinamide adenine dinucleotide; benzoylformate reductase; bovine serum albumin; yeast alcohol dehydrogenase In ethanol; water; toluene at 30℃; for 48h; | 84% |
sodium 3-methyl-2-oxobutyrate
benzyl alcohol
phenylmethyl 3-methyl-2-oxobutanoate
Conditions | Yield |
---|---|
With thionyl chloride at 0℃; for 0.5h; | 82% |
Conditions | Yield |
---|---|
In methanol for 1h; Cooling with ice; | 75% |
2-chloro-3-aminopyridine
sodium 3-methyl-2-oxobutyrate
C10H11ClN2O2
Conditions | Yield |
---|---|
Stage #1: sodium 3-methyl-2-oxobutyrate With hydrogenchloride In 1,4-dioxane; chloroform at 20℃; for 0.5h; Stage #2: 2-chloro-3-aminopyridine With dicyclohexyl-carbodiimide In 1,4-dioxane; chloroform at -5℃; for 2h; Inert atmosphere; | 68% |
Conditions | Yield |
---|---|
With zinc(II) perchlorate; (R)-15-amino-methyl-14-hydroxy-5,5-dimethyl-2,8-dithia<9>(2,5)pyridinophane In methanol for 24h; Ambient temperature; | 57% |
With ammonium sulfate; NADP+-specific glutamate dehydrogenase from Pseudomonas putida, I406F mutant; NADPH In aq. phosphate buffer at 35℃; pH=7.5; Reagent/catalyst; Green chemistry; Enzymatic reaction; enantioselective reaction; |
Conditions | Yield |
---|---|
Stage #1: C12H19N3O6 With sodium hydroxide; trimethylphosphane In methanol; water at 20℃; Stage #2: sodium 3-methyl-2-oxobutyrate With 4-methyl-morpholine; 1-[(1-(cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino)]-uronium hexafluorophosphate In dimethyl sulfoxide at 20℃; | 53% |
Conditions | Yield |
---|---|
In methanol under inert atmosphere; NaO2CCO-i-Pr added to slurry of Fe salt and B compd. (molar ratio 1:1:1) in MeOH; stirred at room temp. for 30 min; modified from R. Y. N. Ho et al., J. Am. Chem. Soc., 2001, 123, 5022-5029; filtered; ppt. dissolved in min. amt. of CH2Cl2; filtered; Et2O vapor diffused into soln.; crystals collected; elem. anal.; | 52% |
Conditions | Yield |
---|---|
With sodium methylate In methanol; water (N2); dissoln. of the Na salt and NH2OH*HCl in MeOH/H2O, addn. of methanolic NaOMe, stirring (48 h), evapn. to dryness, dissoln. (H2O), addn. ofaq. Na2PdCl4; centrifugation, washing (cold H2O), drying (vac., 70°C); elem. anal.; | 51% |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine; bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate In N,N-dimethyl-formamide at 0℃; for 1h; | 42% |
Conditions | Yield |
---|---|
With pyridine; methanesulfonyl chloride In tetrahydrofuran at 0 - 20℃; for 0.416667h; | 40% |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
In methanol for 2h; Cooling with ice; | 18% |
formaldehyd
sodium 3-methyl-2-oxobutyrate
A
ketopantolactone
B
pantolactone
Conditions | Yield |
---|---|
With hydrogenchloride; potassium carbonate 1.) H2O, 38-40 deg C, (well controlled addition of formaldehyde); Yield given. Multistep reaction. Yields of byproduct given; |
diethyl sulfate
sodium 3-methyl-2-oxobutyrate
3-Methyl-2-ethoxy-2-butenoic acid
Conditions | Yield |
---|---|
With n-butyllithium; potassium tert-butylate In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane 1.) -70 deg C, 1 h, 2.) 25 deg C, 1 d; | 12 % Spectr. |
methyl 7-chloro-5-oxoheptanoate
sodium 3-methyl-2-oxobutyrate
3-(1-carboxy-6,6-dimethyl-3-oxo-cyclohex-2-enyl)-propanoic acid
Conditions | Yield |
---|---|
With potassium hydroxide at 100℃; for 3h; Yield given; |
sodium 3-methyl-2-oxobutyrate
Dimethyl 3(S)-4-Cyclohexyl-3-(N-triphenylmethyl)amino-2-oxobutylphosphonate
(6S)-7-Cyclohexyl-2-methyl-6-(N-triphenylmethyl)-amino-5-oxohept-2-ene-3-oic acid
Conditions | Yield |
---|---|
1) THF, 0 deg C, 2) DME, reflux; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
With zinc(II) perchlorate; (R)-15-aminomethyl-14-hydroxy-5,5-dimethyl-2,8-dithia<9>(2,5)pyridinophane In deuteromethanol for 96h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
With sodium hydroxide; water for 2h; Ambient temperature; |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
With sodium hydroxide; water for 96h; Ambient temperature; |
sodium 3-methyl-2-oxobutyrate
dimethyl sulfate
3-Methyl-2-methoxy-2-butenoic acid
Conditions | Yield |
---|---|
With n-butyllithium; potassium tert-butylate In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane 1.) -70 deg C, 1 h, 2.) 25 deg C, 0.5 d; | 30 % Spectr. |
Conditions | Yield |
---|---|
With thionyl chloride for 0.5h; |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 82 percent / SOCl2 / 0.5 h / 0 °C 2: 48 percent / BF3*OEt2 / 2 h / 20 °C 3: 45 percent / NBS; AIBN / CCl4 / 0.17 h / Heating; irradiation 4: 100 percent / Et3N / acetone / 2 h / 20 °C 5: quinoline; H2 / Pd/C / toluene / 2 h / 20 °C View Scheme |
sodium 3-methyl-2-oxobutyrate
phenylmethyl (2S,5Z)-2-(1-methylethyl)-4-oxo-5-(phenylmethylene)-1,3-dioxolane-2-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 82 percent / SOCl2 / 0.5 h / 0 °C 2: 48 percent / BF3*OEt2 / 2 h / 20 °C 3: 45 percent / NBS; AIBN / CCl4 / 0.17 h / Heating; irradiation 4: 100 percent / Et3N / acetone / 2 h / 20 °C View Scheme |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 82 percent / SOCl2 / 0.5 h / 0 °C 2: BF3*OEt2 / 2 h / 20 °C View Scheme |
sodium 3-methyl-2-oxobutyrate
phenylmethyl (2S,5R)-2-(1-methylethyl)-4-oxo-5-(phenylmethyl)-1,3-dioxolane-2-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 82 percent / SOCl2 / 0.5 h / 0 °C 2: 48 percent / BF3*OEt2 / 2 h / 20 °C View Scheme |
sodium 3-methyl-2-oxobutyrate
phenylmethyl (2R,4S)-4-bromo-2-(1-methylethyl)-5-oxo-4-(phenylmethyl)-1,3-dioxolane-2-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 82 percent / SOCl2 / 0.5 h / 0 °C 2: 48 percent / BF3*OEt2 / 2 h / 20 °C 3: 45 percent / NBS; AIBN / CCl4 / 0.17 h / Heating; irradiation View Scheme |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: thionyl chloride / 0.5 h 2: 10 percent / LiI*2H2O / various solvent(s) / 21 h / Heating View Scheme |
sodium 3-methyl-2-oxobutyrate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: NaOH, (2)H2O / 2 h / Ambient temperature 2: NH4Br, sodium cyanoborohydride / methanol / 96 h / Ambient temperature 3: 91 percent / acetic acid / 0.67 h / Heating View Scheme |
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