Polycyclic azines. III. Synthesis of 3-aminoimidazo[1,5-a]pyridine derivatives by cyclodesulfurization of N′-Substituted-N-(2-pyridylmethyl)thioureas with dicyclohexylcarbodiimide

A series of 3-substituted aminoimidazo1,5-a]pyridine derivatives have been synthesized by cyclodesulfurization of a variety of N′-substituted-N-(2-pyridylmethyl)thioureas with dicyclohexylcarbodiimide (DCCD). ¹H Nmr spectral analysis of all synthesized compounds is given.