Kinetic investigations on the carbonylation of aromatic nitro compounds to isocyanates in the presence of rhodium carbonyl complexes |
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| Authors: | K. Unverferth and K. Schwetlick |
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| Affiliation: | (1) Department of Chemistry, Technical University of Dresden, DDR-8027 Dresden, GDR |
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| 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.
                       100°C 1 CO Rh2Cl2(CO)4 MoCl5.    MOCl5, 0,5 Rh2Cl2(CO)4.    .   2 .
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