[EN] A PROCESS FOR PREPARATION OF 4,4'-(1-METHYL-1,2-ETHANDIYL)-BIS-(2,6-PIPERAZINEDIONE)<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 4,4'-(1-MÉTHYL-1,2-ÉTHANEDIYL)-BIS-(2,6-PIPÉRAZINEDIONE)
申请人:SEQUENT SCIENT LTD
公开号:WO2012081036A2
公开(公告)日:2012-06-21
The present invention relates to a new method for preparing 4,4'-(1-methyl-1,2- ethandiyl)-bis-(2,6-piperazinedione) of formula (I) or its enantiomers. More specifically this invention relates to a new process for preparing 4,4'-(1-methyl- 1,2- ethandiyl)-bis-(2,6-piperazinedione), which gives better yield and purity and involves new intermediate.