Microwave-assisted green synthesis of 4,5-dihydro-1H-pyrazole-1-carbothioamides in water

Mol Divers. 2018 Aug;22(3):743-749. doi: 10.1007/s11030-018-9814-7. Epub 2018 Mar 31.

Abstract

Rapid, efficient, simple and green procedure for the synthesis of 4,5-dihydro-1H-pyrazole-1-carbothioamides via the multicomponent reaction of aryl aldehydes, acetophenones and thiosemicarbazide in water in the presence of tetrabutylammonium hydroxide under microwave irradiation is reported.

Keywords: 4,5-Dihydro-1H-pyrazole-1-carbothioamides; Green chemistry; MCRs; Microwave irradiation; Multicomponent reaction; TBAOH; Water.

MeSH terms

  • Acetophenones / chemistry
  • Aldehydes / chemistry
  • Green Chemistry Technology
  • Microwaves
  • Quaternary Ammonium Compounds / chemistry
  • Semicarbazides / chemistry
  • Thioamides / chemical synthesis*
  • Water / chemistry

Substances

  • Acetophenones
  • Aldehydes
  • Quaternary Ammonium Compounds
  • Semicarbazides
  • Thioamides
  • Water
  • thiosemicarbazide
  • tetrabutylammonium
  • acetophenone