Silica bonded S-sulfonic acid: a recyclable catalyst for the synthesis of quinoxalines at room temperature

Molecules. 2009 May 22;14(5):1915-26. doi: 10.3390/molecules14051915.

Abstract

The reaction of 3-mercaptopropylsilica (MPS) and chlorosulfonic acid in chloroform afforded silica bonded S-sulfonic acid (SBSSA), which was used as a catalyst for the room temperature synthesis of quinoxaline derivatives from 1,2-diamino compounds and 1,2-dicarbonyl compounds. The catalyst could be recycled and reused several times without any loss of efficiency.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Chloroform / chemistry
  • Molecular Structure
  • Quinoxalines / chemical synthesis*
  • Quinoxalines / chemistry
  • Silicon Dioxide / chemistry*
  • Sulfonic Acids / chemistry*
  • Temperature

Substances

  • Quinoxalines
  • Sulfonic Acids
  • chlorosulfonic acid
  • Silicon Dioxide
  • Chloroform