Preparation of 4-cyano-4'-hydroxybiphenyl

摘要

The invention relates to a preparation process for 4-cyano-4'- hydroxybiphenyl, said process comprising the protection of the hydroxy group of 4-phenyl-phenol, acylation of the protected 4-phenyl-phenol group, conversion of the resulting ketone into an acid, amidification of the acid thus obtained, dehydration of the resulting amide and deprotection of the hydroxy group.