公开(公告)号：US3884936A

公开(公告)日：1975-05-20

申请号：US35327773

申请日：1973-04-23

Applicant: SUN RESEARCH DEVELOPMENT

Inventor： HOLLSTEIN ELMER J

IPC: C07D201/08 ,  C07D27/08

CPC classification number: C07D201/08

Abstract: A process for preparing 2-pyrrolidone which comprises reacting maleic acid or maleic anhydride with hydrogen and ammonia in an aqueous system at a mole ratio of ammonia to acid or anhydride of from 1.0:1 to 1.2:1, at a temperature of from about 200* to about 300*C, at a pressure of from about 1,000 to about 3,000 psig, for a time of about 0.5 to about 8 hours, and in the presence of a catalyst of palladium supported on carbon.

Abstract translation: 一种制备2-吡咯烷酮的方法，其包括使马来酸或马来酸酐与水和氨在氨水与酸或酸酐的摩尔比为1.0:1至1.2:1的水系中以约200的温度反应 在约1000至约3,000psig的压力下进行约0.5至约8小时的时间，并在负载在碳上的钯催化剂存在下进行。