Silphox [POCl_3−n(SiO₂)_n] as a New, Efficient, and Heterogeneous Reagent for the Synthesis of Benzimidazole Derivatives Under Microwave Irradiation

Abstract

Silphox [POCl_3-n(SiO₂)_n] efficiently catalyzes the condensation of benzene-1,2-diamine with mono and dicarboxylic acids under microwave irradiation to afford benzimidazole derivatives in high yields and short reaction times.

Keywords:

• Benzene-1,2-diamine
• benzimidazole derivatives
• carboxylic acid
• microwave
• silphox

Acknowledgments

The authors thank Persian Gulf University and Payame Noor University Research Councils for financial support of this work.

Notes

^a Isolated yield.

^a Isolated yield.

^a Isolated yield.

^a Isolated yield.

^b Our method.