Chiral epichlorohydrin is obtained by kinetic resolution of racemic epichlorohydrin through hydrolysis. Chiral epichlorohydrin is a valuable intermediate which is widely used in the synthesis of medicine and material. Salen refers to a base formed by the condensation of two identical aldehyde molecules and a diamine molecule, and the complex formed by its combination with metals is called Salen metal complex, which is often used in the synthesis of chiral epichlorohydrin. In this paper, the development of Salen metal complex catalysts and their application in chiral epichlorohydrin synthesis are reviewed. At the same time, the deactivation mechanism of catalyst in the process of hydrolytic kinetic resolution was investigated and the application prospect of synthesis of chiral epichlorohydrin using Salen metal complex catalysts was prospected.

Under the hydrothermal synthesis,an organic?inorganic hybrid compound was prepared through the self?assembly process by using phosphomolybdic acid as a polyoxometallate (polyacid for short) building block and triphenylphosphine as an organic ligand.Its molecular formula was determined by X?ray single?crystal diffraction technique as H₁₅{(PMo₁₂O₄₀)₂[MoO₄?(PPh₃)₄]₂?[NaO₃?(PPh₃)₃][(H₂O?PPh₃)₃]（compound 1),which is a novel inorganic?organic hybrid material formed by electrostatic interactions between [PMo₁₂O₄₀]^3-,[MoO₄?(PPh₃)₄]^2-,[NaO₃?(PPh₃)₃]^5- and H₂O?PPh₃ building blocks.The IR spectrum,luminescence spectra and cyclic voltammetric characteristic curves of compound 1 were also tested,focusing on the photocatalytic degradation of methylene blue(MB).The good ability of compound 1 to degrade organic dyes was demonstrated by photodegradation analysis experiments.