Ionic liquid: A green solvent for organic transformations II

Recently, the research into ionic liquids was blooming (1). This is mainly due to the favourable properties of ionic liquids, such as non-flammability, no measurable vapour pressure, low toxicity, reusability, low cost and high thermal stability. In addition to the polar properties of the ionic liquids, they are noncoordinating, which can avoid any undesired solvent binding in pre-transition states. Due to their unique properties, we envisage that ionic liquids will provide interesting perspectives of how green chemistry can be integrated into organic chemistry. In this article, we will continue our previous discussion and provide the details of current investigations we have done on using ionic liquids in reactions involving allylation reaction and the synthesis of bis(indolyl)methanes and polyhydroquinoline derivatives.