Efficient and Green Synthesis of 1,2-Disubstituted Benzimidazoles and Quinoxalines Using Br⊘nsted Acid Ionic Liquid, [(CH₂)₄SO₃HMIM][HSO₄], in Water at Room Temperature

Abstract

1,2-Disubstituted benzimidazoles and quinoxalines have been synthesized in the presence of Br⊘nsted acid ionic liquid, [(CH₂)₄SO₃HMIM][HSO₄], in water at ambient temperature.

Keywords:

• Br⊘nsted acid ionic liquid
• 1,2-disubstituted benzimidazoles
• quinoxalines
• 1-(4-sulfonic acid)butyl-3-methylimidazolium hydrogen sulfate

ACKNOWLEDGMENT

We gratefully acknowledge partial financial support from Azzahra University Research Council.

Notes

^a Products were characterized by comparison of their spectroscopic data (GC/mass, FT-IR) and melting points with those reported in the literature.

^b Yields refer to isolated pure products.

^a Products were characterized by comparison of their spectroscopic data (GC/mass, FT-IR) and melting points with those reported in the literature.

^b Yields refer to isolated pure products.

^a Yields refer to isolated pure products.