申请人:Belfadhel Hatem Abdallah
公开号:US20100113819A1
公开(公告)日:2010-05-06
The present invention provides methods of forming carbamates, ureas, and isocyanates. In certain embodiments these methods include the step of reacting an amine with an ester-substituted diaryl carbonate to form an activated carbamate which can be further derivitized to form non-activated carbamate or a urea. The urea or carbamate can be subjected to a pyrolysis reaction to form isocyanate.
本发明提供了形成氨基甲酸酯、脲和异氰酸酯的方法。在某些实施方式中,这些方法包括将胺与酯基取代的二芳基碳酸酯反应,形成活化的氨基甲酸酯,进而可以进一步衍生为非活化的氨基甲酸酯或脲。脲或氨基甲酸酯可以经过热解反应形成异氰酸酯。