Metal-free C-3 selective C(sp2)–C(sp3) heteroarylation of anilines with imidazo[1,2-a]pyridine derivatives via cross-dehydrogenative coupling

A metal-free and straightforward method for the construction of C-3 heteroarylation-containing imidazo[1,2- a ]pyridine has been reported, utilizing N,N -dimethylaniline as the methylenation source and furnishing the desired products in good to excellent yields.