Co（acac）3/BMMImCl as a base-free catalyst system for clean syntheses of N,N'-disubstituted ureas from amines and CO2

被引：1
|
作者：
LI Jian1
机构：
来源：
ScienceChina(Chemistry) | 2010年 / 53卷 / 07期
基金：
中国国家自然科学基金;
关键词：
ionic liquids; base-free; N; N’-disubstituted ureas; amines; CO2;
D O I：
暂无
中图分类号：
O643.32 [催化反应];
学科分类号：
081705 ;
摘要：
A base-free catalyst system Co(acac)3/BMMImCl was developed for the carbonylation of amines with CO2.45%-81% isolated yields for N,N’-dialkylureas and 6%-23% isolated yields for N,N-diarylureas were obtained.The catalyst system was recovered and reused without significant loss in activity.In this catalyst system,the base catalyst and chemical dehydrant were efficiently avoided.Different reaction conditions were also discussed and a postulated mechanism was proposed.
引用
收藏
页码：1534 / 1540
页数：7
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