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L-Aspartic acid benzyl ester cas 7362-93-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With phosphoric acid In tetrahydrofuran at 20℃; for 4h; | 94% |
With phosphoric acid In dichloromethane at 20℃; for 3h; | 94% |
With trifluoroacetic acid In dichloromethane for 2h; Ambient temperature; |
dibenzyl L-aspartate toluene-4-sulphonate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With hydrogen bromide In acetic acid |
L-aspartic acid dibenzyl ester hydrochloride
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid |
(S)-3-amino-dihydro-furan-2,5-dione; hydrobromide
benzyl alcohol
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With triethylamine |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With hydrogen iodide; acetic acid |
L-Aspartic acid
benzyl alcohol
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
With PPA at 92℃; for 8h; | |
With sulfuric acid In diethyl ether at 20℃; for 24h; |
Conditions | Yield |
---|---|
Stage #1: (S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid With 6-chloro-3-((dimethylamino)(dimethyliminio)methyl)-1H-benzo[d][1,2,3]triazol-3-ium-1-olatehexafluorophosphate(V) In dichloromethane at 20℃; for 0.5h; Stage #2: i-Amyl alcohol With triethylamine In dichloromethane at 20℃; for 4h; | 95% |
methanol
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
(S)-1-benzyl 4-methyl 2-aminosuccinate
Conditions | Yield |
---|---|
With thionyl chloride for 17h; Heating; | 86% |
Stage #1: (S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid With thionyl chloride for 0.25h; Cooling with ice-water; Stage #2: methanol at 20℃; for 29h; | |
With thionyl chloride at 20℃; Cooling with ice; |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
N-((R)-3-Benzyloxytetradecanoyloxy)succinimid
N-<(R)-3-(benzyloxy)tetradecanoyl>-(S)-aspartic acid α-benzyl ester
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 17h; Ambient temperature; | 86% |
tert-butylisonitrile
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
2-nitro-benzaldehyde
Conditions | Yield |
---|---|
In methanol at 0℃; for 12h; | 85% |
formaldehyd
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
diphenylmethyl isocyanide
4-benzyloxycarbonyl-1-<(N-diphenylmethylcarbamoyl)methyl>azetidin-2-one
Conditions | Yield |
---|---|
In methanol at 0℃; for 12h; | 83% |
tert-butylisonitrile
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
4-methoxy-benzaldehyde
Conditions | Yield |
---|---|
In methanol at 0℃; for 12h; | 80% |
cis,trans-2,5-dimethoxytetrahydrofuran
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
(2-pyrrol-1-yl)succinic acid 1-benzyl ester
Conditions | Yield |
---|---|
With sodium acetate; acetic acid at 76℃; for 2h; | 78% |
Stage #1: (S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid With sodium acetate; acetic acid In water at 20 - 75℃; for 0.5h; Inert atmosphere; Stage #2: cis,trans-2,5-dimethoxytetrahydrofuran In water at 75℃; for 2h; Inert atmosphere; |
tert-butylisonitrile
4,4,4-trichloro-Δ2-butenal
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
In methanol at 0℃; for 24h; | 72% |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
N-(9-fluorenylmethoxycarbonyl)-L-aspartyl α-benzyl ester
Conditions | Yield |
---|---|
64% |
Conditions | Yield |
---|---|
In methanol 1 h; RT; | 61% |
(S)-N-(tert-butoxycarbonyl)serine
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
diazomethyl-trimethyl-silane
A
(S)-1-benzyl 4-methyl 2-aminosuccinate
Conditions | Yield |
---|---|
Stage #1: (S)-N-(tert-butoxycarbonyl)serine; (S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid With C12H6B2Br4O3 In 1,2-dichloro-ethane at 90℃; for 24h; Stage #2: diazomethyl-trimethyl-silane In methanol; hexane; 1,2-dichloro-ethane at 0℃; for 0.5h; | A 19 %Spectr. B 60% |
tert-butylisonitrile
phenylglyoxal hydrate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
In methanol at 0℃; for 12h; | 58% |
fluorene-9-carbaldehyde
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
diphenylmethyl isocyanide
Conditions | Yield |
---|---|
In methanol at 65℃; for 48h; | 33% |
5-Methylfurfural
phenyl isocyanate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
In methanol Ambient temperature; | 31% |
pyridine-4-carbaldehyde
tert-butylisonitrile
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
Conditions | Yield |
---|---|
In methanol at 0℃; for 12h; | 31% |
phenyl isocyanate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
benzaldehyde
Conditions | Yield |
---|---|
In methanol for 64h; Ambient temperature; | 30% |
cis,trans-2,5-dimethoxytetrahydrofuran
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
(S)-2-Carbazol-9-yl-succinic acid 1-benzyl ester
Conditions | Yield |
---|---|
With hydrogenchloride; acetic acid In 1,4-dioxane for 3h; Heating; | 30% |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
allyl isocyanide
isobutyraldehyde
Conditions | Yield |
---|---|
In methanol at 0℃; for 8h; | 28% |
phenyl isocyanate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
3-methoxy-benzaldehyde
Conditions | Yield |
---|---|
In methanol Ambient temperature; | 24% |
Conditions | Yield |
---|---|
With water; sodium hydrogencarbonate anschliessend Behandeln mit Chlorokohlensaeure-benzylester; |
acetic acid tert-butyl ester
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
(S)-1-benzyl-4-tert-butyl 2-aminosuccinate
Conditions | Yield |
---|---|
With perchloric acid |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
4-methoxybenzyloxycarbonyl azide
Conditions | Yield |
---|---|
With magnesium oxide In 1,4-dioxane; water |
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
isobutene
(S)-1-benzyl-4-tert-butyl 2-aminosuccinate
Conditions | Yield |
---|---|
With sulfuric acid In 1,4-dioxane |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane |
tert-Butyl 4-nitrophenyl carbonate
(S)-3-amino-4-(benzyloxy)-4-oxobutanoic acid
2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester
Conditions | Yield |
---|---|
With triethylamine |
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