Conclusions
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1.
We have synthesized aromatic monoisocyanates in 78–90% yield by carbonylation of nitro compounds with carbon monoxide in the presence of a PdCl2 + pyridine + V2O5, V2O4, or MoO3 catalyst at 200°C and a CO pressure of 50–100 atm.
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2.
The reactivity of methyl- and chlorine-substituted nitrobenzenes depends only slightly on the number and position of the substituents in the phenyl ring.
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3.
The reactivity of halogen-substituted nitrobenzenes diminishes in the order Cl > Br ≫ I.
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Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2333–2337, October, 1978.
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Nefedov, B.K., Manov-Yuvenskii, V.I. Catalytic synthesis of aromatic monoisocyanates from nitro compounds and carbon monoxide. Russ Chem Bull 27, 2066–2069 (1978). https://doi.org/10.1007/BF00946528
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DOI: https://doi.org/10.1007/BF00946528