Abstract

The kinetics of carbonylation of aromatic nitro compounds to isocyanates have been studied at 100°C and 1 atm CO in the presence of Rh2Cl2(CO)4 and MoCl5. The rate is first order in the nitro compounds as well as in MoCl5 and 1/2 order in Rh2Cl2(CO)4; the rate is independent of the carbon monoxide pressure. Large substituents in position 2 of the nitro compound increase the reaction rate.

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