Polymer-supported palladium-based bimetallic catalysts for the oxidative carbonylation of aniline

Polymer-supported bimetallic catalyst PVP-PdCl2-MnCl2 [PVP = poly(N-vinyl-2-pyrrolidone] exhibits a high activity and selectivity for the oxidative carbonylation of aniline to carbamate ester under atmospheric pressure[V(CO)/V(O-2) = 10/1]. A remarkable bimetallic synergic effect in PVP-PdCl2-MXn (M: second transition metal) gives rise to an obvious increase in the conversion and selectivity for the reaction in the presence of a base (NaOAc), Among the M components tested, Mn-Pd exhibits the strongest synergic effect