Multicomponent reactions (MCRs) are well-known one-pot processes in organic synthesis in which three or more substrates come together to make a new product.1–6 MCRs are typified by easy workup, savings in time and energy, and reduction of the consumption of chemicals.7,8 These advantages make MCRs eco-friendly systems, highly desirable from the point of view of green chemistry. The term "ionic liquid (IL)" is considered synonymous with "molten salt," with the distinction that molten salts have melting points above 100 C, while ionic liquids melt below 100 C.9 Nonetheless, some literature reports do refer to such materials with melting points above 100 C as ILs.10,11 ILs are also known by other names, such as designer or neoteric solvents. Recently, ILs have attracted considerable attention due to having multiple roles, in which they may serve as both solvents and catalyst supports. Non-flammability, negligible vapor pressure, high thermal, chemical, and electrochemical stability, adjustability of polarity with water or other solvents, compatibility with green chemistry due to low volatility,12 and stability are some advantages of ILs.13
