Nitrobenzene carbonylation in the presence of PdCl2/Fe/I-2 and PdCl2Py2/Fe/I-2 systems

The new catalytic system PdCl2/Fe/I-2/Pyridine, active in nitrobenzene carb onylation to ethyl phenylcarbamate (EPC) is presented. For the catalyst com position determined by the following ratio: 0.17/10/1.4/12.1 of its compone nts respectively, at 180 degrees C; under initial CO pressure = 4 MPa, afte r 2 h, a nitrobenzene conversion reached 99.6%, the percentages of the prod ucts obtained were: 83.4% EPC and 14% aniline (NB/Pd = 540). Influence of initial CO pressure, reaction temperature, reaction time and t he catalyst composition on the reaction products, were established. (C) 200 0 Elsevier Science B.V. All rights reserved.