In the presence of a catalytic amount of L-proline (10 mol %), transamidations of carboxamides with amines were achieved under solvent-free conditions. The transamidation process is compatible with a wide range of amines.

Regioselective sulfenylation of imidazoheterocycles with thiophenols at room temperature is reported. Sulfenylation is promoted by N-chlorosuccinimide under metal-free conditions with a broad range of substrate scopes.

Copper(I) iodide catalyzed oxidative synthesis of imidazo[1,2‐a]pyridines through CH activation of methyl ketones in water is reported. One‐pot, three‐component coupling reactions for the synthesis of sulfenylimidazo [1,2‐a]pyridines have also been developed from readily available methyl ketones, amino pyridines, and diphenyl disulphide.