N,N'-CARBONYL-BIS-(4-ETHYL-2,3-DIOXO)-PIPERAZINE, PROCESS FOR THE PREPARATION THEREOF AND USE THEREOF

摘要

A new compound called N,N'-carbonyl-bis-(4-ethyl-2,3-dioxo)-piperazine of Formula I <IMG> (I) A process for the preparation thereof based on the reaction of 4-ethyl-2,3-dioxo-piperazine or a trimethylsilyl derivative thereof with carbonyl chloride or a derivative thereof. The use of the compound of Formula I as an intermediate in the preparation of compounds of Formula II <IMG> (II) where R is a radical, substituted in alpha position, of a molecule of an acid selected from the group formed by phenylacetic acid, p-hydroxy phenylacetic acid, a 6 (phenylacetamido)-penicillanic acid and a 7-(phenyl-acetamido)-cephalosporanic acid.