ChemInform Abstract: Microwave‐Assisted Tandem Transformation on an Ionic‐Liquid Support: Efficient Synthesis of Pyrrolo/Pyridobenzimidazolones and Isoindolinone‐Fused Benzimidazoles.

Abstract

Benzimidazoles. -The title tandem process consists of three steps: condensation followed by successive double intramolecular cyclizations. The use of the ionic liquid as a soluble support facilitates purification by simple precipitation along with advantages like high loading capacity, and homogeneous reaction conditions. -(THUMMANAGOTI, S.; YELLOL, G. S.; SUN*, C.-M.; Chem. Asian J. 6 (2011) 9, 2471-2480, http://dx.doi.org/10.1002/asia.2011.00277 ; Dep. Appl. Chem., Natl. Chiao Tung Univ., Hsinchu 30010, Taiwan; Eng.) -Bartels 52-121