Patent ID: 7825274
Filing Date: 2010-11-02
Classification: C07F

Abstract:
1. A preparation method for bisbiphenylacylphosphine oxide, the bisbiphenylacylphosphine oxide represented by the following structural formula (I), wherein —Ar— is a phenyl group, the method comprising: heating an excess phosphorus trichloride and a 2-phenylphenol with at least one catalyst to form a 10-chloro-9,10-dihydro-9-oxa-10-phosphaphenanthrene (CDOP) wherein the CDOP is represented by the following structural formula (II); removing the remaining phosphorus trichloride; hydrolyzing the CDOP to form a 9,10-dihydro-9-oxa-10-phosphaphen-anthrene-10-oxide (DOPO) wherein the DOPO is represented by the following structural formula (IV); and conducting one of an addition and oxidization reaction and a coupling reaction with the DOPO to form the bisbiphenylacylphosphine oxide which has the structural formula (I).