This process lasted for 8-1 Ohr and yields of NHP could beabove 70%, with high selectivity of 95% and about 75% conversion of GBL.

• 在此条件下,GBL转化率达到75%25以上,关键中间体N-羟乙基吡咯烷酮(NHP)的选择性达到95%25以上,NHP的收率可达70%25以上。