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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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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
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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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inquirySupply top quality products with a reasonable price Application:api
(S)-Benzyl 2-azetidinone-4-carboxylateAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Best quality with low priceAppearance:white to light yellow crystalline powder Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
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inquirydibenzyl L-aspartate
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: dibenzyl L-aspartate With chloro-trimethyl-silane; triethylamine In diethyl ether at 0℃; for 1h; Stage #2: With tert-butylmagnesium chloride In diethyl ether at -5 - 0℃; for 2h; | 47% |
Stage #1: dibenzyl L-aspartate With chloro-trimethyl-silane In diethyl ether at -78 - 25℃; Stage #2: With tert-butylmagnesium bromide In diethyl ether at -78 - 25℃; | 40% |
With chloro-trimethyl-silane; tert-butylmagnesium chloride |
(L)-N-(trimethylsilyl)dibenzyl aspartate
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tert-butylmagnesium chloride In diethyl ether at 0℃; Yield given; | |
With tert-butylmagnesium chloride 1.) 0 deg C, 2.) room temperature, overnight; Yield given; | |
With tert-butylmagnesium chloride In diethyl ether at 0℃; | |
With tert-butylmagnesium chloride In diethyl ether at -5 - 20℃; for 12.5h; | 5.1 g |
D-aspartic acid dibenzyl ester
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With chloro-trimethyl-silane; tert-butylmagnesium bromide; triethylamine Yield given. Multistep reaction; |
dibenzyl L-aspartate
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: TEA; 4-dimethylaminopyridine / diethyl ether / 3 h / 0 °C 2: 5.1 g / tBuMgCl / diethyl ether / 12.5 h / -5 - 20 °C View Scheme |
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With cytochrome P411 expressed in Escherichia coli In aq. phosphate buffer at 20℃; for 24h; pH=8; Catalytic behavior; Enzymatic reaction; enantioselective reaction; | n/a |
(S)-benzyl 4-oxoazetidine-2-carboxylate
(S)-4-(hydroxymethyl)-2-azetidinone
Conditions | Yield |
---|---|
With sodium tetrahydroborate In methanol at 0 - 20℃; Inert atmosphere; | 100% |
With sodium tetrahydroborate In methanol | 71% |
With sodium tetrahydroborate In methanol | |
With lithium borohydride |
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With magnesium bis(hexamethyldisilazide) In dichloromethane for 0.2h; Product distribution; Further Variations:; Reagents; Solvents; concentrations; | 100% |
With magnesium bis(hexamethyldisilazide) In dichloromethane for 0.2h; | 100% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
(S)-4-oxo-azetidine-2-carboxylic acid
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In tetrahydrofuran for 14h; | 98% |
With hydrogen; palladium 10% on activated carbon In methanol at 25℃; under 760.051 Torr; for 0.5h; | 93% |
With hydrogen; palladium on activated charcoal In isopropyl alcohol at 20℃; under 1140.08 Torr; for 0.333333h; | 85% |
With hydrogen; palladium on activated charcoal In tetrahydrofuran at 25℃; for 0.75h; | 11.8 g |
(S)-benzyl 4-oxoazetidine-2-carboxylate
tert-butyldimethylsilyl chloride
(S)-benzyl-1-(tert-butyldimethylsilyl)-4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With triethylamine | 98% |
With triethylamine | 97% |
With triethylamine In N,N-dimethyl-formamide | 93% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
(S)-4-Oxo-azetidine-2-carboxylic acid 2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-ethoxy}-ethyl ester
α-3,6,9,12-tetraoxatridecyl-L-aspartic acid, α-benzyl-L-aspartic acid diblock copoly(β-peptide); Monomer(s): α-3,6,9,12-tetraoxatridecyl-L-aspartic acid β-lactam; α-benzyl-L-aspartic acid β-lactam
Conditions | Yield |
---|---|
With tris(bistrimethylsilylamine)scandium(III) In dichloromethane at 20℃; | 95% |
di-tert-butyl dicarbonate
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With dmap In acetonitrile for 17h; Ambient temperature; | 94% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
ortho-toluoyl chloride
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 0 - 20℃; Inert atmosphere; | 86% |
1,1,1,2,2,2-hexamethyldisilane
(S)-benzyl 4-oxoazetidine-2-carboxylate
(4S)-N-(trimethylsilyl)-2-oxoazetidine-4-carboxylic acid benzyl ester
Conditions | Yield |
---|---|
With saccharin In 1,2-dimethoxyethane for 2h; Heating; | 78% |
2,2-dimethyl-propanol-1
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 100℃; for 2h; | 75% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
2-tolyl isocyanate
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile at 20℃; for 2h; Inert atmosphere; | 75% |
phosgene
(S)-benzyl 4-oxoazetidine-2-carboxylate
benzyl (S)-4-oxo-1-(phenylcarbamoyl)azetidine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: phosgene; aniline With triethylamine In dichloromethane; toluene at 0℃; for 0.5h; Stage #2: (S)-benzyl 4-oxoazetidine-2-carboxylate In tetrahydrofuran; dichloromethane; toluene | 73% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
BOC-L-alanine-NCA
benzyl (S)-1-[(S)-N-(tert-butoxycarbonyl)-alanyl]-4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: (S)-benzyl 4-oxoazetidine-2-carboxylate With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.166667h; Stage #2: BOC-L-alanine-NCA In tetrahydrofuran; hexane at -78℃; for 1h; | 71% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
butan-1-ol
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 100℃; for 2h; | 69% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
2,6-dimethyl-4-pyrimidinyl p-toluenesulfonate
(R)-benzyl 1-(2,6-dimethylpyrimidin-4-yl)-4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With 1,1'-bis-(diphenylphosphino)ferrocene; potassium carbonate; bis(dibenzylideneacetone)-palladium(0) In 1,4-dioxane at 100℃; for 16h; Inert atmosphere; | 69% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
isopropyl alcohol
(S)-4-isopropoxycarbonyl-2-azetidinone
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 205℃; for 2h; | 68% |
methanol
(S)-benzyl 4-oxoazetidine-2-carboxylate
methyl (S)-(-)-2-oxoazetidine-4-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 86℃; for 4h; | 64% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
Benzyl bromoacetate
Conditions | Yield |
---|---|
Stage #1: (S)-benzyl 4-oxoazetidine-2-carboxylate With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In tetrahydrofuran; hexane at -78℃; for 0.0333333h; Stage #2: Benzyl bromoacetate In tetrahydrofuran; hexane at -78 - 20℃; | 59% |
octanol
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 80℃; for 2h; | 58% |
2-methyl-propan-1-ol
(S)-benzyl 4-oxoazetidine-2-carboxylate
2-methyl-1-propyl (S)-(-)-2-oxoazetidine-4-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 85℃; for 2h; | 58% |
With tetrabutoxytitanium |
1-dodecyl alcohol
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 105℃; for 4h; | 58% |
Cyclopentanol
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 85℃; for 2h; | 56% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
cyclohexanol
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 105℃; for 3h; | 56% |
1-octadecanol
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 91℃; for 4h; | 51% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
hexan-1-ol
Conditions | Yield |
---|---|
With tetrabutoxytitanium at 85℃; for 2h; | 47% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
4-isopropyl-2,5-dioxo-oxazolidine-3-carboxylic acid-tert-butyl ester
Conditions | Yield |
---|---|
Stage #1: (S)-benzyl 4-oxoazetidine-2-carboxylate With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.166667h; Stage #2: 4-isopropyl-2,5-dioxo-oxazolidine-3-carboxylic acid-tert-butyl ester In tetrahydrofuran; hexane at -78℃; for 1h; | 41% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: (S)-benzyl 4-oxoazetidine-2-carboxylate With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.166667h; Stage #2: Z-L-Ala-NCA In tetrahydrofuran; hexane at -78℃; for 1h; | 37% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
Conditions | Yield |
---|---|
Stage #1: (S)-benzyl 4-oxoazetidine-2-carboxylate With sodium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.25h; Inert atmosphere; Stage #2: tert-butyl(4-(isocyanatomethyl)phenyl)carbamate In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; | 37% |
(S)-benzyl 4-oxoazetidine-2-carboxylate
tert-butyl 2-(fluorocarbonyl)pyrrolidine-1-carboxylate
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; hexane at -78 - 20℃; | 20% |
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