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Chemistry of Heterocyclic Compounds

, Volume 42, Issue 1, pp 22–27 | Cite as

A new reaction of the phenylhydrazones of 1,5-diketones. Synthesis of dihydropyran derivatives

  • T. V. Moskovkina
Article

Abstract

It was shown that the monophenylhydrazones of 1,5-diketones are converted by reduction with borohydride followed by treatment of the obtained hydrazino alcohols with acidic agents into derivatives of dihydropyran with the elimination of phenylhydrazine as the respective salt. γ,δ-Unsaturated ketones were isolated as side products of this reaction. The ways in which these compounds are formed are discussed.

Keywords

dihydropyrans 1,5-diketones monophenylhydrazones unsaturated ketones borohydride reduction cyclization 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • T. V. Moskovkina
    • 1
  1. 1.Institute of Chemistry and Applied EcologyFar-East State UniversityVladivostokRussia

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