Ammonium- and Phosphonium-Based Ionic Liquid: Green and Reusable Catalysts

Abstract

Recently, the use of ionic liquids (ILs) attracted an increasing interest in the field of organic synthesis because of its mild reaction condition, negligible vapor pressure, solvating ability, and easy recyclability. ILs are used as green reaction media due to their unique chemical and physical properties such as non-volatility, noninflammability, thermal stability, and controlled miscibility. Today, they have a wider scope, playing significant role in reactions as a solvent as well as catalyst. Several reactions have been recently reported using ILs as reaction media and rate enhancers. In chemical and pharmaceutical industries, there is always a demand for