Synthesis of Quinolines, Quinazolines and Spiro-Quinazolines Using Nanoporous TiO₂ Containing an Ionic Liquid Bridge as an Efficient and Reusable Catalyst

Abstract

The synthesis of quinoline, quinazoline and spiro-quinazoline derivatives can be effectively promoted in the presence of nanoporous TiO₂ containing an ionic liquid bridge. Using this method, the products are obtained in very short reaction times with excellent yields under solvent-free conditions. The reusability of the catalyst is another important feature of the reported method.

Keywords:

• Ionic liquid bridge
• nanoporous TiO₂
• quinolines
• quinazolines
• spiro-quinazolines

Acknowledgments

We are thankful to the Research Council of the University of Guilan for the partial support of this research.