A process for preparing diphenyl phosphine oxide derivative of benzoyl

The present invention provides a process for preparing benzoyl diphenyl phosphine oxide derivatives, comprising the steps of: diphenyl phosphine oxide derivative, a first solvent and a catalyst are mixed under anaerobic conditions, to give first the reaction solution; the derivatives of benzoic anhydride dissolved in a second solvent to obtain a second reaction solution; mixing the first solution and the second reaction the reaction solution was subjected to a nucleophilic reaction, to obtain the structure shown in formula I benzylamine acyl diphenyl phosphine oxide derivatives. Preparation benzoyl diphenyl phosphine oxide derivative of the present invention provides a one-step reaction, reducing reaction step, thereby reducing the waste of raw materials in a number of reaction steps and intermediates because it is not a result of the use of 100%, you can increase the yield of the final product. During the reaction to reduce the waste of raw materials and the selection of reaction conditions so that this disclosure greatly improved yields are between 80 and 91%.