A PEG bridged tertiary amine functionalized ionic liquid exhibiting thermoregulated reversible biphasic behavior with cyclohexane/isopropanol: synthesis and application in Knoevenagel condensation

摘要

A novel poly(ethylene glycol) bridged tertiary amine functionalized ionic liquid PEG_(800)-DPIL(CI) was synthesized. It can form a temperature driven reversible biphasic system with cyclohexane/ isopropanol mixed solvent. This biphasic system was applied in Knoevenagel condensation up to 99%. PEG_(800)-DPIL(CI) could be simply recovered and recycled for several runs.