Protected phosphine oxides of formula X are useful intermediates for the preparation of tertiary phosphine oxides and acylphosphine oxide photoinitiators. ##STR1##
公式X的保护膦氧化物是制备三级膦氧化物和酰基膦氧化物光引发剂的有用中间体。
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.
Preparation of New Phosphine Oxide Synthons: Synthesis of an Analogue of Muscarinic Antagonists
作者:Roger G. Hall、Peter Riebli
DOI:10.1055/s-1999-2899
日期:——
Protected primary phosphine oxides may be obtained by reaction of ethyl (diethoxyalkyl)phosphinates with organometallic reagents. These products, stable to chromatography or distillation, may be further elaborated into new, functional unsymmetrical secondary and tertiary phosphine oxides. A close analogue of muscarinic antagonists has been prepared using this methodology.