Reactions of cephalosporin sulfones 3. Synthesis of 2‐phenylhydrazonocephem‐sulfones. A new potential entry to 2‐aminocephems

Abstract

Reaction of cephem sulfones 1a-e with aryldiazonium salts gives the 2-azo compounds which immediately rearrange into the corresponding 2-hydrazono derivatives 2a-e.