Intramolecular Pd-catalyzed coupling reactions of N-aryl-2-triflyloxybenzamides were examined. The procedure using DBU as a base was effective for even in the reaction of oxygen-substituted benzamides.
A palladium reagent prepared from Pd (OAc)(2) (0.2 eq) and n-Bu3P (0.6 eq) catalyzed an aryl-aryl coupling reaction. This procedure is effective for coupling reactions of aryl triflate possessing no oxygen groups with arene, and of aryl iodide with arene.