Efficient Combination of Task-Specific Ionic Liquid and Microwave Dielectric Heating Applied to Synthesis of a Large Variety of Nitrones

Under mild microwave irradiation conditions and without any additional organic solvents, a large variety of nitrones were prepared in a weak Lewis base phosphinite task-specific ionic liquid (TSIL-OPPh(2)) in excellent yields. This catalytic TSIL was also recyclable. Under optimized microwave irradiation conditions, the reaction occurred at very shorter reaction time and higher yields in comparison with conventional heating conditions. (C) 2010 Wiley Periodicals, Inc. Heteroatom Chem 21:78-83, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20581