Process for preparing 1,3-disubstituted urea
    2.
    发明公开
    Process for preparing 1,3-disubstituted urea 失效
    赫尔斯特朗,赫尔斯特伦,

    公开(公告)号:EP0846679A2

    公开(公告)日:1998-06-10

    申请号:EP97309642.3

    申请日:1997-12-01

    摘要: Process for preparing 1,3-disubstituted urea of the formula:
    wherein R 5 is the same as or different from R 6 , and each of R 5 and R 6 is independently linear or branched, alkyl of 1-20 carbon atoms, alkenyl group having 2 to 20 carbon atoms or alkynyl group having 2 to 20 carbon atoms, which may have phenoxy, alkoxy of 1-13 carbon atoms, monocycloalkyl of 3-8 carbon atoms, bicycloalkyl of 6-12 carbon atoms, aryl of 6-13 carbon atoms, furyl, pyridyl, or aralkyl of 7-20 carbon atoms, comprising reacting cyclic carbonic acid ester with an amine using alkali metal alkoxide or trialkylamine as base, in safety and high yield.

    摘要翻译: 制备下式的1,3-二取代脲的方法:其中R 5与R 6相同或不同,R 5和R 6各自独立地为直链或支链 ,1-20个碳原子的烷基,具有2-20个碳原子的链烯基或具有2-20个碳原子的炔基,其可以具有苯氧基,1-13个碳原子的烷氧基,3-8个碳原子的单环烷基, 6-12个碳原子的芳基,6-13个碳原子的芳基,7-20个碳原子的呋喃基,吡啶基或芳烷基,包括使用碱金属醇盐或三烷基胺作为碱,使环状碳酸酯与胺反应,安全和高产率 。