One-pot sequential C-N coupling and cross dehydrogenative couplings: synthesis of novel azole fused imidazo[1,2-a]pyridines.

An efficient one-pot protocol has been developed using sequential C-N coupling and intramolecular dehydrogenative cross-couplings for the synthesis of azole fused imidazo[1,2-a]pyridine derivatives in good yields (62-78%).