申请人:Lonza Ltd
公开号:EP2394981A1
公开(公告)日:2011-12-14
The present invention relates to a process for the preparation of cyclic cis-diamines of formula
wherein Q is selected from the group consisting of -CH2-, -CH(CH3)-, -C(CH3)2-, -(CH2)2-, -(CH2)3- and -(CH2)4-;
n is an integer from 0 to 4;
and each substituent R, if present, is independently a linear or branched C1-8 alkyl attached to any one of the depicted carbon atoms;
starting from cyclic dienes such as cyclopentadiene and an azodicarboxylic acid derivative such as azodicarboxamide. Also claimed are novel bicyclic hydrazo compounds as intermediates in the process.
本发明涉及一种制备式为的环状顺式二胺的方法,其中Q被选择为由-CH2-,-CH(CH3)-,-C(CH3)2-,-(CH2)2-,-(CH2)3-和-(CH2)4-组成的群体中的一种;n为0到4的整数;如果存在每个取代基R,则独立地附加到所示碳原子中的任何一个的是线性或支链C1-8烷基。该方法从环状二烯,如环戊二烯和如偶氮二羧酸酰胺这样的衍生物开始。本发明还声明了新的双环肼中间体化合物作为该过程的中间体。