ChemInform Abstract: Synthesis of Novel Imidazo[1,2-a]pyridine-4-hydroxy-2H-coumarins by Groebke—Blackburn—Bienayme Multicomponent Reaction as Potential NS5B Inhibitors.
A Groebke—Blackburn—Bienayme three component reaction of 4-hydroxy-3-formylcoumarin, alkyl isocyanides, and 2-aminoazines is demonstrated to give various imidazo[1,2-a] fused heterocycles containing the coumarin scaffold.