发明授权
US5248755A Process for the preparation of asymmetrically substituted ureas,
carbamates or thiocarbamates
失效
制备不对称取代的脲,氨基甲酸酯或硫代氨基甲酸酯的方法
- 专利标题: Process for the preparation of asymmetrically substituted ureas, carbamates or thiocarbamates
- 专利标题(中): 制备不对称取代的脲,氨基甲酸酯或硫代氨基甲酸酯的方法
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申请号: US958155申请日: 1992-10-09
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公开(公告)号: US5248755A公开(公告)日: 1993-09-28
- 发明人: Martin Muller , Gerhard Stern , Erich Schulz , Markus Rossler
- 申请人: Martin Muller , Gerhard Stern , Erich Schulz , Markus Rossler
- 申请人地址: ATX Linz
- 专利权人: Chemie Linz Gesellschaft m.b.H.
- 当前专利权人: Chemie Linz Gesellschaft m.b.H.
- 当前专利权人地址: ATX Linz
- 优先权: ATXA1831 19890728; ATXA1832 19890728; ATXA1833 19890728; ATXA111 19910118
- 主分类号: C07C273/18
- IPC分类号: C07C273/18 ; C07C333/04
摘要:
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.
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