Catalytic Hydrodechlorination of Trichlorobenzenes with Pd(Phen)Cl2as Catalyst Precursor

Abstract

We reported the catalytic hydrodechlorination (HDC) of trichlorobenzenes by an organometallic compound Pd(Phen)Cl2as a catalyst precursor. The catalyst precursor was prepared by chemical coordination reaction and characterized by FTIR and1H NMR techniques. The HDC performance of Pd(Phen)Cl2as catalyst precursor was evaluated on 1,2,3-, 1,2,4-, and 1,3,5-trichlorobenzenes (TCBs). All TCBs could be converted to dechlorination products with high conversion. Products distribution was closely related with the substrate structures and C-Cl bond energies. A reasonable reaction mechanism was also proposed.