-
公开(公告)号:US4298748A
公开(公告)日:1981-11-03
申请号:US97814
申请日:1979-11-27
申请人: Toni Dockner , Uwe Kempe , Herbert Krug , Peter Magnussen , Werner Praetorius , Hans J. Szymanski
发明人: Toni Dockner , Uwe Kempe , Herbert Krug , Peter Magnussen , Werner Praetorius , Hans J. Szymanski
IPC分类号: C07D233/06 , C07D233/08 , C07D233/10
CPC分类号: C07D233/10 , C07D233/06
摘要: A novel process for the preparation of 2-imidazolines by reacting 1,2-diamines with nitriles or carbonyl compounds in the gas phase at from 200.degree. to 450.degree. C. in the presence of an oxide or phosphate of a metal of group 3 or 4 of the periodic table and/or in the presence of silicon dioxide.The 2-imidazolines obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and drugs.
摘要翻译: 一种新型的制备2-咪唑啉的方法,该方法是在200-350℃的气相中,在二氧化碳或磷酸三烷基酯存在下,使1,2-二胺与腈或羰基化合物反应, 4和/或在二氧化硅存在下。 通过本发明的方法可获得的2-咪唑啉是制备染料,作物保护剂和药物的有价值的起始原料。