1,1'-(Diazomethylene)bis(benzene) → HCID 68140924, compound

Participants

Reaction Steps

To a solution of 3β-chloro-3α-methyl-7β-(α-tert. -butoxycarbonylaminophenylacetamido)cepham-4α-carboxylic acid (0.9 g) in methylene chloride (20 ml), is added a solution of diphenyldiazomethane in methylene chloride until the red color or the reaction solution does not disappear. The reaction mixture is evaporated to remove the solvent, leaving a residue of benzhydryl 3β-chloro-3α-methyl-7β-phenylacetamidocepham-4α-carboxylate (1.17 g). Yield: 96%.

Provenance & Evidence