申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0111950A2
公开(公告)日:1984-06-27
A process for the preparation of a bisphosphine dioxide with formula
in which R1, R2, R3 and R4, being the same or different, represent substituted or unsubstituted alkyl, aryl-, alkaryl- or aralkyl groups or an alkylene group is formed by R, and R2 and/or R3 and R4 respectively, R5 represents H, R6 represents H or a substituted or unsubstituted alkyl-, aryl-, alkaryl- or aralkyl group, or R5 and R6 form an alkylene group.
by contacting in an aprotic solvent and in the presence of a basic compound
an oxirane with formula:
with one or more phosphine oxides with formula:
一种制备式如下的二氧化双膦的工艺
其中 R1、R2、R3 和 R4(相同或不同)分别代表取代或未取代的烷基、芳基、烷芳基或芳烷基,或由 R 和 R2 和/或 R3 和 R4 形成的亚烯基,R5 代表 H,R6 代表 H 或取代或未取代的烷基、芳基、烷芳基或芳烷基,或 R5 和 R6 形成的亚烯基。
在碱性化合物存在下,在非沸腾溶剂中与以下物质接触
式中的环氧乙烷
式中的环氧乙烷与一个或多个式中的膦氧化物接触: