10.57647/

A new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in water

PDF HTML
  • Enayatollah Sheikhhossein1,
  • Dadkhoda Ghazanfari1,
  • Vida Nezamabadi2,
  1. Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran.
  2. Department of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, Kerman, Iran.

Published in Issue 2024-02-03

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Sheikhhossein, E. ., Ghazanfari, D., & Nezamabadi, V. (2024). A new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in water. Iranian Journal of Catalysis, 3(4). https://doi.org/10.57647/
Crossref
Scopus
Google Scholar
Europe PMC

PDF views: 148

HTML views: 18

Abstract

p-Dodecylbenzenesulfonic acid (DBSA) was used as a catalyst for a simple and efficient one-pot synthesis of aryl substititued tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromens via initial Knoevenagel, subsequent Micheal and final heterocyclization reactions of aryl aldehyde, malononitrile and 4-hydroxycoumarin/dimedone in moderate to excellent yields. The present method was operationally simple and use of water as the reaction medium made the process environmentally benign.

Keywords

  • Dihydropyrano[c]chromen,
  • Green media,
  • p-Dodecylbenzenesulfonic acid (DBSA),
  • Tetrahydrobenzo[b]pyran
PDF HTML