摘要:
A modified approach for the synthesis of 3-substituted 2-aryl/heteroaryl imidazo[4,5-b]pyridines utilising palladium catalysed cross-coupling reactions under microwave enhanced conditions has been achieved. utilisation of (A-(ta)phos)(2)PdCl2-catalysed cross-coupling reactions enables rapid derivatization of this (imidazo[4,5-b]pyridines) pharmaceutically relevant core. This catalytic system is compatible with a broad spectrum of arylboronic acids electron rich, electron poor, and heteroarylboronic acids. (C) 2011 Elsevier Ltd. All rights reserved.