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Preparation of chloromethyl triphenylphosphine chloride
　
Chloromethyl triphenyl phosphine chloride is a new pharmaceutical intermediate. The preparation technology of chloromethyl triphenyl phosphine chloride takes triphenyl phosphine, high purity hydrogen chloride, polyformaldehyde and chlorination reagent as raw materials, chooses suitable solvents, and prepares chloromethyl triphenyl phosphine chloride products through chloromethylation, chlorination and refinement of crude products. 。 The weight yield of the product is more than 55% (measured by triphenylphosphine), the purity of the product is more than 98%, and the melting point is 264.3-266.0. The technology is in the leading position in China.