STUDY OF THE ARYLATION REACTION OF ETHYLENE BY TOLUENE

The arylation reaction of ethylene by toluene has been studied in the liquid phase with the using of the homogeneous catalytic system Pd(OAc)2+Cu(OAc)2+PPh3, in the semibatch flask reactor under atmospheric pressure. Optimum conditions for the reactions were as follows: mole ratio of the components of the catalytic system Pd(OAs)2:Cu(OAc)2:PPh3=1:2:0.03, concentration of the active mass of the catalytic system, [Pd(OAc)2]=6•10-2÷10-3 mol/l, temperature (95÷105)0C. In these conditions the yield of vinyltoluene is (5÷8) wt.%. It has been proposed as a posible mechanism for the reaction including the formation of the intermediate complexes of palladium acetate with toluene, ethylene and triphenyl phosphine