METHOD FOR PREPARING PHOSPHORUS-CONTAINING LIGAND

A method for preparing a phosphorus-containing ligand is provided, which includes: mixing a phosphorus chloride compound, polypyridine ionic liquid-loaded porous microspheres with a first organic solvent to obtain a first mixture, and mixing a compound in Formula (2) with a second organic solvent to obtain a second mixture,wherein Z is a multivalent aliphatic hydrocarbon group or a multivalent aromatic hydrocarbon group comprising at least one substituent group, wherein the substituent group is selected from hydrogen atom, halogen atom, C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 alkanoyl group, aryl group, heteroaryl group, cyano group, or nitro group, and n is an integer from 1 to 8; and mixing the first mixture with the second mixture to make the first mixture react with the second mixture to obtain a reaction mixture, removing generated HCl, filtrating to obtain a filter liquor, and treating the filter liquor to obtain the phosphorus-containing ligand.