Synthesis of novel 2,3-dihydro-2,3-furandione and 1H-pyrazole-3-carboxylic acid derivatives

ÜNGÖREN Ş. H., Deniz B., Altural B.

Asian Journal of Chemistry, vol.16, no.2, pp.805-810, 2004 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 2
  • Publication Date: 2004
  • Journal Name: Asian Journal of Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.805-810
  • Keywords: 1H-Pyrazole-3-carboxylic acid, 2,3-Dihydro-2,3-furandione, Cyclocondensation, Michael-type addition
  • Yozgat Bozok University Affiliated: No


The reaction of oxalyl chloride with unsymmetricallly substituted diketones (1a-e) furnished the corresponding 2,3-dihydro-2,3-furandiones (2a-e). In addition, 1H-phrazole-3-carboxylic acids (5c-e) were synthesized by the reaction of (2c-e) with phenylhydrazine and 1,5-diphenylcarbazide.