SELECTIVE CONVERSION OF NITROBENZENE TO PHENYLCARBAMATES CATALYZED BY PD(II) AND HETEROPOLYACIDS

A homogeneous catalyst system of Pd(ll) and a heteropolyacid (HPA) converts nitrobenzene to N-phenylcarbamate with a selectivity of 96.3% at 100% nitrobenzene conversion, which appears to be the best value known in the literature. However, the catalyst forms solid deposits during the reaction. © 1990 Korean Institute of Chemical Engineering.close9