Russian Journal of Organic Chemistry

, Volume 43, Issue 6, pp 861–863 | Cite as

Synthesis of 3-(2-Oxo-2,3-dihydrobenzo[b]furan-3-ylidenehydrazono)-2,3-dihydrobenzo[b]furan-2-one

  • N. A. Pulina
  • V. V. Zalesov
  • S. S. Kataev


Reactions of benzophenone and fluoren-9-one hydrazones with (2-hydroxyphenyl)oxoacetic acid gave [carboxy(2-hydroxyphenyl)methylidenehydrazono](2-hydroxyphenyl)acetic acid which underwent intramolecular cyclization with formation of 3-(2-oxo-2,3-dihydrobenzo[bfuran-3-ylidenehydrazono)-2,3-dihydrobenzo[b]furan-2-one. The symmetric azine was also obtained by reactions of (2-hydroxyphenyl)oxoacetic acid with triphenylphosphoranylidenehydrazones derived from benzophenones, fluoren-9-one, and 1-methyl-2,3-dihydro-1H-indole-2,3-dione.


Benzophenone Azine Anhydrous Toluene Hydrazono Phenylphosphine Oxide 
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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • N. A. Pulina
    • 1
  • V. V. Zalesov
    • 2
  • S. S. Kataev
    • 3
  1. 1.Federal Agency of Health Protection and Social DevelopmentPerm State Pharmaceutical AcademyPermRussia
  2. 2.Perm State UniversityPermRussia
  3. 3.Perm Regional Forensic Medical Examination BureauPermRussia

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