The catalytic activity of metal triflates was investigated in Friedel–Crafts benzoylation under microwave irradiation. Friedel–Crafts benzoylation with benzoyl chloride of a variety of arenes containing electron-rich and electron-poor rings using bismuth triflate under microwave irradiation is described. This method allows the preparation of aryl ketones under solventless conditions in good to excellent yields and short reaction time. Bismuth triflate was easily recovered and reused five times without significant loss of the catalytic activity.
Synthetic Communications, 2014, Vol 44, Issue 20, p. 2921-2929
microwave; green chemistry; bismuth triflates; solvent free; green chemsitry; triflates; rare earth metals; Frieel-Crafts; Acylation