Solvent-free preparation of ionic liquids using a household microwave oven

Abstract

An efficient solventless protocol for the preparation of a wide variety of ionic liquids is described, which requires a simple exposure of admixed 1-methylimidazole and alkyl halides to microwave irradiation in open glass containers. The details of this clean process using a common household microwave oven, which exploits the newer inverter technology system for better power attenuation, are described. The characterization and thermal stability data on selected ionic liquids and their potential applications are summarized.

Ionic Liquids: Synthesis and Applications in Catalysis

“…The recent introduction of efficient, solventless, onepot synthetic protocols should make ILs cheaper and thus encourage a wider use of these neoteric solvents [48][49][50].…”

Ionic Liquids from (Meth) Acrylic Compounds

“…However, as reaction time is somewhat too long, several trials to reduce it were attempted. Sonochemistry (Namboodiri & Varma, 2002;Estager et al, 2007;Levêque et al, 2007) and microwave chemistry Varma & Namboodiri, 2001b) which are well described in the literature and often named as a good way to shorten reaction times, were used to try to improve our reaction. In the previous synthetic method the quaternarisation of 3-bromopropyl methacrylate with N-methylimidazole leads to 99 % yield in 24 hours.…”

Synthesis of 4,4′-diaminotriphenylmethane derivatives using H3PW12O40 and HZSM5 zeolite under solvent-free conditions

“…E-mail: heshmat@umz.ac.ir the processes from environmental as well as economic point of view [14,15].…”