Metal- and Solvent-Free Cascade Reaction for the Synthesis of Amino Pyrazole Thioether Derivatives

J Org Chem. 2021 Dec 3;86(23):16473-16484. doi: 10.1021/acs.joc.1c01846. Epub 2021 Nov 8.

Abstract

We developed an iodine-mediated cascade strategy to synthesize amino pyrazole thioether derivatives (11) in the absence of metals as well as solvents. The present approach provides amino pyrazole thioethers in a highly selective manner without the formation of diaryl sulfide and sulfenyl-enaminonitrile with broad substrate scope. The reactivity of nine sulfenylation sources and synthetic applications of the synthesized compounds have been demonstrated. Thus, the overall iodine-mediated multicomponent reaction (MCR) is more economically feasible, efficient, and environmentally benign.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Iodine*
  • Metals
  • Solvents
  • Sulfides*

Substances

  • Metals
  • Solvents
  • Sulfides
  • Iodine