62676-11-3

Upstream product

• 1113-59-3 bromopyruvic acid 
• 908093-98-1 diazodiphenylmethane 

Downstream Products

• 62676-04-4 8-oxo-7t-(2-thiophen-2-yl-acetylamino)-(6rH)-4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 62676-03-3 2-hydroxy-8-oxo-7t-(2-thiophen-2-yl-acetylamino)-(6rH)-4-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid benzhydryl ester 

Relevant academic research and scientific papers

Methods and intermediates for preparing cis-4-oxoazetidine intermediates

The stereospecific cycloaddition of nitrogen containing acetic acid halides or anhydrides with Schiff bases having a carbalkoxy group substituted on the methine carbon atom offers new intermediates and methods for preparing synthetic cephalosporin congeners having antibacterial activity.

Cis-4-oxoazetidine intermediates and methods of preparing them

The stereospecific cycloaddition of nitrogen containing acetic acid halides or anhydrides with Schiff bases having a carbalkoxy group substituted on the methine carbon atom offers new intermediates and methods for preparing synthetic cephalosporin congeners having antibacterial activity.

8-Oxo-4-thia-1-azabicyclo (4.2.0)-oct-2-ene derivatives

Novel bicyclic β-lactams and intermediates useful in their preparation are disclosed. In particular, 7β-acyl-amino- and 7β-amino-8-oxo-4-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acids are prepared. The acylated compounds are antibacterial agents.