申请人:Chemie Linz Gesellschaft m.b.H.
公开号:US05248755A1
公开(公告)日:1993-09-28
Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates or substituted isocyanates by reaction of an adduct of isocyanic acid and a tertiary amine with a primary and secondary amine, an alcohol, a thiol or a compound having one or two non-cumulated olefinic double bonds, and a process for the preparation of N-mono- or N,N-disubstituted ureas by reaction of ammonium isocyanate with a primary or secondary amine in a diluent.
制备不对称取代的脲、氨基甲酸酯、硫代氨基甲酸酯或取代异氰酸酯的过程,通过将异氰酸和三级胺的加合物与一级和二级胺、醇、硫醇或具有一个或两个非累积烯丙基双键的化合物反应。以及通过在稀释剂中将氨基异氰酸盐与一级或二级胺反应制备N-单取代或N,N-双取代脲的过程。