APPLICATION OF 2-TRIFLUOROMETHANESULFONYLOXYPYRIDINE IN TRIFLUOROACETIC ACID TO ACYLATION OF AROMATICS

New method for synthesis of aromatic ketones was investigated. 2-Trifluoromethanesulfonyloxypyridine (TSP) in trifluoroacetic acid was very useful in the condensation of carboxylic acids with some aromatic compounds to give aromatic ketones. The reaction of arenes with benzoic acid in the presence of TSP in trifluoroacetic acid gave benzoylarenes. By the same method, 2-acylfluorenes were obtained from carboxylic acids and fluorene.