Catalytic method of synthesis of phosphorus acids esters from zinc phosphide and alcohol

Gulshara S. Polimbetova, Zh. U. Ibraimova, A. K. Borangazieva

2013

Data confidence 70 medium

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Abstract

Ecologically safe effective catalytic method for preparing phosphorous and phosphoric acid esters by oxidation of zinc phosphide with oxygen in the solution of copper(II) halides in butanol at 50–70°C is developed. It is found that in the presence of Cu(II) chloride a mixture of dibutyl hydrogen phosphite and tributyl phosphate is formed, while at the catalysis with Cu(II) bromide tributyl phosphate is mainly obtained. Promoting action of hydrogen chloride on the reaction rate and yield of organophosphorus compounds is established. Optimal reaction conditions are found and redox mechanism of catalytic process is assumed.