Abs tract-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.Palladium-assisted aryl-aryl coupling reactions, such as the Heck and Suzuki-Miyaura reactions, have been