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Paper | Special issue | Vol 58, No. 1, 2002, pp.175-181
Published online, 1st January, 1970
DOI: 10.3987/COM-01-S(M)5
Studies on the Selective Intramolecular Biaryl Coupling Reaction of 2-Tryflyloxy-6-halobenzanilides Using a Palladium Reagent

Takashi Harayama,* Hiroko Toko, Kyoko Kubota, Hiromi Nishioka, Hitoshi Abe, and Yasuo Takeuchi

*Faculty of Pharmaceutical Science, Okayama University, 1-1-1 Tsushima-naka, Okayama 700-8530, Japan


The aryl-aryl coupling reaction of 2-triflyloxy-6-halobenzanilides using a palladium reagent under several reaction conditions was examined. The 6-iodo compound gave triflyloxyphenanthridone selectively in excellent yield under the conditions for the ordinary Heck reaction.