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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 28, 1998 - Issue 23
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Original Articles

An Effective and Convenient Esterefication of Cephalospor in Derivatives by Using Quarternary Ammonium Salts as Catalysts

, , , , , , , & show all
Pages 4345-4354 | Received 01 Jun 1998, Published online: 23 Aug 2006
 

Abstract

A method for preparing cephalosporin derivatives by reacting cephalosporin alkaline metal salts with organic halide in the presence of quarternary ammonium salts catalyst is disclosed. Δ3 to Δ2 isomerization, a side reaction commonly reported in preparation of cephalosporin derivatives, was successfully eliminated. The desired Δ3 was obtained as a sole product in the reaction.

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