Facile synthesis of imidazo[1,2-a]pyridines via a one-pot three-component reaction under solvent-free mechanochemical ball-milling conditions

In this work, 3-aminoimidazo[1,2-a]pyridine derivatives have been synthesized by a one-pot three-component condensation reaction of 2-aminopridines, aldehydes and isocyanides under solvent-free mechanochemical ball-milling conditions in good to excellent yields at room temperature. This efficient protocol has many noticeable advantages such as mild reaction conditions, high yields, high atom economy, short reaction times and simple separation.