Process for preparing 1,4-bis (4-phenoxybenzoyl) benzene in supersaturated state

摘要

The present invention is a method for producing 1,4-bis (4-phenoxybenzoyl) benzene, Providing a reaction mixture comprising terephthaloyl chloride, diphenyl ether and Lewis acid in a solvent; Reacting terephthaloyl chloride with diphenyl ether to obtain a product mixture comprising 1,4-bis (4-phenoxybenzoyl) benzene-Lewis acid complex; 1,4-bis (4-phenoxybenzoyl) benzene-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether A method of dissolving in a solvent at a weight concentration of 1,4-bis (4-phenoxybenzoyl) benzene in a solvent that is higher than the saturation limit of the complex.