Synthesis of Novel Tetra-Substituted Pyrazole Derivatives from 2,3-Furandione

Genç H., Taşdemir V., Tozlu İ., Öğün E.

LETTERS IN ORGANIC CHEMISTRY, vol.16, no.11, pp.891-897, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 11
  • Publication Date: 2019
  • Doi Number: 10.2174/1570178616666190314150302
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.891-897
  • Keywords: Cyclic oxalyl compounds, pyrazole, pyrazolopyridazinone, bioactivity, solid state, amide, BIOLOGICAL EVALUATION, 1,3,5-TRISUBSTITUTED PYRAZOLES, ANTIMICROBIAL ACTIVITY, ONE-POT, DESIGN, FUNCTIONALIZATION, ACID
  • Van Yüzüncü Yıl University Affiliated: Yes


Synthesis of pyrazole-3-carboxylic acid was progressed via two different protocols, one of which is solid state. Pyrazole-3-carboxylic acid was converted into different derivatives such as ester, urea, amide and nitrile. The amide compound was converted to nitrile using SOCl2 and DMF. Solid state heating of carboxylic acid gave decarboxylated product. Cyclization of tetra-substituted pyrazole with hydrazines resulted in pyrazolopyridazinones. The antimicrobial activities of the synthesized pyrazole derivatives against Bacillus cereus, Escherichia coli, Micrococcus luteus, Staphylococcus aureus, and Saccharomyces cerevisiae were evaluated. One of the pyrazole derivatives which possess nitro group showed antimicrobial activity in only B. cereus, a Gram-positive bacteria, with an MIC of 128 mu g/mL.