Method for preparing phosphine compound based on pyrophosphorous acid
AssigneeZhejiang Yangfan New materials Co., LTD
InventorsLibiao HAN, Xin WANG, Jianqiu ZHANG
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Abstract
A method for preparing a phosphine compound using pyrophosphorous acid is provided. A phosphine oxide compound or a phosphine sulfide compound is reacted with reducing agent pyrophosphorous acid (H4P2O5) with or without impurities under stirring in the presence of a catalyst to produce a reaction product, where the catalyst is elementary halogen (X2) or halide (MXXY). After the reaction is completed, the reaction product is subjected to water washing, extraction and purification to obtain the target phosphine compound.
Claims10
A method for preparing a phosphine compound based on pyrophosphorous acid, comprising:
- adding pyrophosphorous acid (H4P2O5) with or without impurities as a reducing agent to a phosphine oxide compound or a phosphine sulfide compound to obtain a mixture;
- mixing the mixture with a catalyst followed by a reduction reaction under stirring to produce a reaction product, wherein the catalyst is an elementary halogen X2 or a halide MXXY;
- and
- subjecting the reaction product to water washing, extraction and purification to obtain the phosphine compound Y;
- wherein a molar ratio of pyrophosphorous acid to a phosphine oxide group in phosphine oxide compound or a phosphine sulfide group in the phosphine sulfide compound is 1-20:1;
- and a molar ratio of the catalyst to the phosphine oxide group in the phosphine oxide compound or the phosphine sulfide group in the phosphine sulfide compound is 0.001-0.1:1.
Dependencies are inferred from the claim text.