One-Pot Synthesis of Hexahydroquinolines via a Four-Component Cyclocondensation under Microwave Irradiation in Solvent Free Conditions: A Green Chemistry Strategy.
An AICl3–ZnCl2 mixture supported on silica gel is found to be an efficient medium for the Fries rearrangement of acyloxybenzene or naphthalene derivatives in solvent-free conditions under microwave irradiation.