Process for the preparation of 3-benzoyl benzofuran derivatives

摘要

The invention relates to a process for the preparation of 3-benzoyl benzofuran derivatives of general formula: <IMAGE> I wherein a benzofuran derivative of general formula: <IMAGE> II is reacted in situ in the presence of aluminium chloride successively with phosgene or oxalyl chloride, and then with a phenolic derivative of general formula: <IMAGE> III to produce a complex which is hydrolysed to form the desired compound of 3-benzoyl benzofuran.