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Influence of pyridine and compounds of vanadium, iron, and molybdenum on the carbonylation of azo and nitro compounds in the presence of RhCl3-4H2O

  • V. I. Manov-Yuvenskii
  • K. B. Petrovskii
  • A. L. Lapidus
Organic Chemistry

Conclusions

  1. 1.

    Rhodium trichloride tetrahydrate without promoters catalyzes the synthesis of isocyanates by the carbonylation of azobenzenes. Pyridine, compounds of vanadium, molybdenum, and iron acetylacetonate inhibit this reaction.

     
  2. 2.

    Molybdic acid, its salts, molybdenum trioxide, vanadium pentoxide, the vanadium(IV) oxychloride complex with dioxane, organometallic compounds of vanadium, iron and vanadium monoxide acetylacetonates promote rhodium trichloride in carbonylating nitro compounds with carbon monoxide.

     
  3. 3.

    Nitro compounds are converted into isocyanates in the presence of rhodium catalysts, bypassing the stage of formation and carbonylation of azo compounds as a result of the direct carbonylation of the nitrene formed as an intermediate.

     

Keywords

Vanadium Rhodium Isocyanate Acetylacetonate Azobenzene 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • V. I. Manov-Yuvenskii
    • 1
  • K. B. Petrovskii
    • 1
  • A. L. Lapidus
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRMoscow

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