Carbonylation of aromatic dinitro compounds with carbon monoxide to respective dicarbamates in the presence of the PdCl2/Fe/I2/Py catalytic system

The object of this study was the reductive carbonylation of 1,3-dinitrobenzene, 1,4-dinitrobenzene and 2,4-dinitrotoluene to respective dicarbamates in the presence of the PdCl2/Fe/I2/Py catalytic system. By increasing the catalyst amount and extending the carbonylation reaction time a 100% conversion of dinitrobenzene to the corresponding dicarbamates was achieved with a selectivity of 87, 68, and 55%, for 1,4-, 1,3-dinitrobenzene and 2,4-dinitrotoluene, respectively.

Graphical abstractThe object of the study was the reductive carbonylation of 1,3-dinitrobenzene, 1,4-dinitrobenzene and 2,4-dinitrotoluene to respective dicarbamates in the presence of PdCl2/Fe/I2/Py catalytic system. By raising the catalyst amount and by extending the carbonylation reaction time a 100% conversion of dinitrobenzene to corresponding dicarbamates was achieved, with a selectivity of 87, 68, and 55% for 1,4-, 1,3-dinitrobenzene and 2,4-dinitrotoluene, respectively.Figure optionsDownload full-size imageDownload as PowerPoint slide