Carbamate synthesis from amines and dialkyl carbonate over inexpensive and clean acidic catalyst—Sulfamic acid  

作　　者：Bo Wang Jing He Run Cang Sun 

机构地区：[1]Institute of Biomass Chemistry and Technology,College of Material Science and Technology,Beijing Forestry University,Beijing 100083,China [2]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China

出　　处：《Chinese Chemical Letters》2010年第7期794-797,共4页中国化学快报（英文版）

基　　金：the Beijing Forestry University Excellent Young Scientist Fund(No.BLYX200904);National Innovation Experiment Program for University Students(No.091002234);Major State Basic Research Development Program of China(973 Program,No.2010CB732204) are gratefully acknowledged.

摘　　要：Sulfamic acid has been proved to be the most efficient and recyclable catalyst in carbamate synthesis from alkylamine and dialkyl carbonate.High selectivity,cost-efficiency and simple product separation were the advantageous features obtained in this process.Sulfamic acid could be reused several times and keep its initial activity in the recycle runs.In addition,sulfamic acid has also exhibited the potential catalytic ability for alkylation of aromatic amines.Sulfamic acid has been proved to be the most efficient and recyclable catalyst in carbamate synthesis from alkylamine and dialkyl carbonate.High selectivity,cost-efficiency and simple product separation were the advantageous features obtained in this process.Sulfamic acid could be reused several times and keep its initial activity in the recycle runs.In addition,sulfamic acid has also exhibited the potential catalytic ability for alkylation of aromatic amines.

关 键 词：Sulfamic acid Acidic catalysis CARBAMATE ALKYLAMINE Dimethyl carbonate 

分 类 号：TQ247.56[化学工程—有机化工] TQ281