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Studies in the formation of heterocyclic rings containing nitrogen

Part I. Condensation ofo-Phenylenediamine with aromatic aldehydes

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Summary

The reaction betweeno-phenylenediamine and eighteen aromatic aldehydes under acidic conditions has been investigated, and found to yield mono-and disubstituted benziminazoles in varying proportions, and in two cases, a benzodiazacycloheptatriene derivative also. Thirteen new compounds obtained have been characterised. Stepwise mechanism for the formation of the different types of products is suggested, and the influence of substitutuents in the aldehydes on the mode of the reaction and cyclisation is discussed.

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Authors and Affiliations

  1. Department of Chemistry, Osmania University, Hyderabad-Dn.

    N. V. Subba Rao & C. V. Ratnam

Authors
  1. N. V. Subba Rao
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  2. C. V. Ratnam
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Rao, N.V.S., Ratnam, C.V. Studies in the formation of heterocyclic rings containing nitrogen. Proc. Indian Acad. Sci. 43, 173–180 (1956). https://doi.org/10.1007/BF03052777

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  • DOI: https://doi.org/10.1007/BF03052777

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