Facile One??Pot Synthesis of [1, 2, 3] Triazolo [1, 5??a] Pyridines from 2??Acylpyridines by Copper (II)??Catalyzed Oxidative N N Bond Formation

~97%

~%

~99%

~16%

~19%

~87%

~%

~%

~30%

~%

~%

~83%

~%

~%

~%

~%

~79%

~%

~%

~%

~%

~88%