Protected phosphine oxides of formula X are useful intermediates for the preparation of tertiary phosphine oxides and acylphosphine oxide photoinitiators. ##STR1##
Process for the preparation of protected phosphine oxides
申请人:Ciba-Geigy Corporation
公开号:US05298663A1
公开(公告)日:1994-03-29
A process for the preparation of a protected phosphine oxide which comprises reacting a phosphinate ester having a protecting group on the phosphorus atom with an organomagnesium halide or an organolithium compound at a temperature of -70.degree. C. to 65.degree. C. Protected phosphine oxides so prepared are useful intermediates for the preparation of tertiary phosphine oxides and acylphosphine oxide photoinitiators.