83923-48-2

Upstream product

• 83923-47-1 benzyl 4-methoxycarbonylmethylene-8-oxo-7-phenoxyacetamido-1,3-diazabicyclo<4.2.0>octane-2-carboxylate 
• 83923-45-9 (3RS,4SR)-4-(3-methoxycarbonylprop-2-enyl)-1-(4-methoxymethoxyphenyl)-3-phenoxyacetamidoazetidin-2-one 
• 112213-40-8 (3RS,4SR)--4-(3-methoxycarbonylprop-2-enyl)-3-phenoxyacetamidoazetidin-2-one 
• 112213-39-5 (3RS,4SR)-4-<3-methoxycarbonylprop-2-enyl>-3-phenoxyacetamidoazetidin-2-one 

Relevant academic research and scientific papers

Synthesis of Novel Fused β-Lactams by Intramolecular 1,3-Dipolar Cycloadditions. Part 9. Preparation of the 7-Oxo-1,3-dizabicycloheptane-2-carboxylate and 8-Oxo-1,3-dizabicyclooctane-2-carboxylate Ring Systems

4-Vinylazetidin-2-one (24) has been converted into 1--4-vinylazetidin-2-one (27) and 1--4-(2-methoxycarbonylvinyl)-azetidin-2-one (43) which on thermolysis in toluene gave (2RS,5RS)-ben