2,3,4-Trifluorobenzenesulfonyl chloride may be used as an arylating agent during the synthesis of (2,3,4-trifluorophenyl)furan derivatives. It may also be employed during the preparation of 1-(2-bromobenzyl)-2,5-bis(2,3,4-trifluorophenyl)pyrrole and 1-(2-bromobenzyl)-2-(2,3,4-trifluorophenyl)pyrrole.