115075-46-2

Upstream product

• 115026-43-2 (3S,4S)-3-acetyl-4-<(S)-1-benzyloxyethyl>-1-(di-p-anisylmethyl)-2-azetidinone 
• 81927-55-1 O-benzyl 2,2,2-trichloroacetimidate 
• 100-39-0 benzyl bromide 
• 127200-96-8 1-[Bis-(4-methoxy-phenyl)-methyl]-3-(1,1-dimethoxy-ethyl)-4-((S)-1-hydroxy-ethyl)-azetidin-2-one 
• 115026-44-3 3-Acetyl-1-[bis-(4-methoxy-phenyl)-methyl]-4-[(S)-1-(1-ethoxy-ethoxy)-ethyl]-azetidin-2-one 
• 115026-42-1 [(S)-2-Benzyloxy-prop-(E)-ylidene]-[bis-(4-methoxy-phenyl)-methyl]-amine 
• 127200-93-5 [Bis-(4-methoxy-phenyl)-methyl]-[(S)-2-(1-ethoxy-ethoxy)-prop-(E)-ylidene]-amine 
• 126748-44-5 N-[bis(4-methoxyphenyl)methyl]-formamide 
• 122151-32-0 (S)-2-(benzyloxy)-1-(pyrrolidin-1-yl)propan-1-one 
• 19293-62-0 p,p'-dimethoxybenzhydrylamine 
• 90-96-0 bis(p-methoxyphenyl)methanone 
• 127254-18-6 [(S)-2-Benzyloxy-prop-(E)-ylidene]-[bis-(4-methoxy-phenyl)-methyl]-amine 
• 81445-44-5 (S)-2-(benzyloxy)propanal 
• 54783-72-1 ethyl (S)-2-(benzyloxy)propionate 

Downstream Products

• 112256-78-7 (3S,4S)-4-<(S)-1-benzyloxyethyl>-1--3-<(R)-1-hydroxyethyl>-2-azetidinone 
• 126577-34-2 (3S,4S)-4-<(S)-1-benzyloxyethyl>-3-<(S)-1-hydroxyethyl>-2-azetidinone 
• 112256-75-4 (3S,4S)-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-4-<(S)-1-(p-toluenesulfonyloxy)ethyl>-2-azetidinone 
• 112256-77-6 (3S,4S)-4-<(S)-1-benzyloxyethyl>-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-2-azetidinone 
• 126193-08-6 (3S,4S)-4-acetyl-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-2-azetidinone 
• 112256-74-3 (3S,4S)-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-4-<(RS)-1-iodoethyl>-2-azetidinone 
• 112256-76-5 (3S,4S)-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-4-<(S)-1-hydroxyethyl>-2-azetidinone 
• 112256-73-2 (3S,4R)-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>-1-di-p-anisylmethyl-4-vinyl-2-azetidinone 
• 118735-54-9 (3S,4S)-3-<(R)-1-(t-butyldimethylsilyloxy)ethyl>4-<(S)-1-(p-toluenesulfonyloxy)ethyl>-2-azetidinone 
• 112256-71-0 (3S,4S)-4-<(S)-1-benzyloxyethyl>-3-<(R)-1-hydroxyethyl>-2-azetidinone 
• 115026-45-4 (3S,4S)-4-<(S)-1-benzyloxyethyl>-3-<(R)-(1-t-butyldimethylsilyloxy)ethyl>-2-azetidinone 

Relevant academic research and scientific papers

A NOVEL SYNTHESIS OF (3R,4R)-4-ACETOXY-3--2-AZETIDINONE, THE VERSATILE KEY INTERMEDIATE OF CARBAPENEM SYNTHESIS, FROM (S)-ETHYL LACTATE

A highly efficient synthesis of the title compound was accomplished employing the addition of diketene to chiral imine as a key stereoselective reaction and using inexpensive (S)-ethyl lactate as a starting material.