2-Azetidinecarboxylic acid, 1-[(1,1-dimethylethyl)dimethylsilyl]-3-[[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]methylene]-4-oxo-, phenylmethyl ester, (2S,3E)-

Base Information

• Chemical Name: 2-Azetidinecarboxylic acid, 1-[(1,1-dimethylethyl)dimethylsilyl]-3-[[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]methylene]-4-oxo-, phenylmethyl ester, (2S,3E)-
• CAS No.: 193959-24-9
• Molecular Formula: C40H47NO4Si2
• Molecular Weight: 661.988
• Mol file: 193959-24-9.mol

Synonyms:

Chemical Property of 2-Azetidinecarboxylic acid, 1-[(1,1-dimethylethyl)dimethylsilyl]-3-[[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]methylene]-4-oxo-, phenylmethyl ester, (2S,3E)-

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2-Azetidinecarboxylic acid, 1-[(1,1-dimethylethyl)dimethylsilyl]-3-[[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]methylene]-4-oxo-, phenylmethyl ester, (2S,3E)-

There total 3 articles about 2-Azetidinecarboxylic acid, 1-[(1,1-dimethylethyl)dimethylsilyl]-3-[[4-[[(1,1-dimethylethyl)diphenylsilyl] oxy]phenyl]methylene]-4-oxo-, phenylmethyl ester, (2S,3E)- which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 13.0%

(S)-1-(tert-Butyl-dimethyl-silanyl)-3-[1-[4-(tert-butyl-diphenyl-silanyloxy)-phenyl]-meth-(Z)-ylidene]-4-oxo-azetidine-2-carboxylic acid + benzyl alcohol (100-51-6,185532-71-2) → (4S)-4-benzyloxycarbonyl-1-(tert-butyldimethylsilyl)-3-[E-4'-(tert-butyldiphenylsilyloxy)phenylmethylene]-2-azetidinone (193959-24-9) + (4S)-4-benzyloxycarbonyl-1-(tert-butyldimethylsilyl)-3-[Z-4'-(tert-butyldiphenylsilyloxy)phenylmethylene]-2-azetidinone (342624-65-1)

Guidance literature:

With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; dmap; In dichloromethane; at 20 ℃; for 3h;

DOI:10.1021/jm000145g

Reference yield:

(4S)-N-tert-butyldimethylsilylazetidin-2-one-4-carboxylic acid (82938-50-9,162856-35-1) → (4S)-4-benzyloxycarbonyl-1-(tert-butyldimethylsilyl)-3-[E-4'-(tert-butyldiphenylsilyloxy)phenylmethylene]-2-azetidinone (193959-24-9)

Guidance literature:

Multi-step reaction with 2 steps

1.1: LDA / tetrahydrofuran; hexane / 0.25 h / -9 °C

1.2: LDA / tetrahydrofuran; hexane / 0.33 h / -9 °C

1.3: tetrahydrofuran; hexane / 1 h / 0 °C

2.1: 13 percent / EDCI / DMAP / CH₂Cl₂ / 3 h / 20 °C

With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; lithium diisopropyl amide; dmap; In tetrahydrofuran; hexane; dichloromethane; 1.1: Peterson reaction;

DOI:10.1021/jm000145g

Reference yield:

4-(tert-butyldiphenylsilyloxy)benzaldehyde (116748-05-1) → (4S)-4-benzyloxycarbonyl-1-(tert-butyldimethylsilyl)-3-[E-4'-(tert-butyldiphenylsilyloxy)phenylmethylene]-2-azetidinone (193959-24-9)

Guidance literature:

Multi-step reaction with 2 steps

1.1: LDA / tetrahydrofuran; hexane / 0.25 h / -9 °C

1.2: LDA / tetrahydrofuran; hexane / 0.33 h / -9 °C

1.3: tetrahydrofuran; hexane / 1 h / 0 °C

2.1: 13 percent / EDCI / DMAP / CH₂Cl₂ / 3 h / 20 °C

With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; lithium diisopropyl amide; dmap; In tetrahydrofuran; hexane; dichloromethane; 1.1: Peterson reaction;

DOI:10.1021/jm000145g

upstream raw materials:

benzyl alcohol

(4S)-N-tert-butyldimethylsilylazetidin-2-one-4-carboxylic acid

4-(tert-butyldiphenylsilyloxy)benzaldehyde

Downstream raw materials:

(3S,4S)-4-benzyloxycarbonyl-1-(tert-butyldimethylsilyl)-3-[4'-(tert-butyldiphenylsilyloxy)benzyl]-2-azetidinone

(3S,4S)-4-benzyloxycarbonyl-1-[3'-(benzyloxycarbonyl)phenylacetate]-3-[4'-(tert-butyldiphenylsilyloxy)benzyl]-2-azetidionone

(3S,4S)-3-[4-[(1,1-dimethylethyl)diphenylsilyloxy]phenylmethyl]-4-benzyloxycarbonylazetidin-2-one

(2S,3S)-1-[2-(3-Benzyloxycarbonyl-phenyl)-acetyl]-3-(4-hydroxy-benzyl)-4-oxo-azetidine-2-carboxylic acid benzyl ester