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

T Hirayama, S Ueda, T Okada, N Tsurue…

Index: Hirayama, Tasuku; Ueda, Satoshi; Okada, Takahiro; Tsurue, Norihiko; Okuda, Kensuke; Nagasawa, Hideko Chemistry - A European Journal, 2014 , vol. 20, # 14 p. 4156 - 4162

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Citation Number: 12

Abstract

Abstract An efficient and simple method for the synthesis of various [1, 2, 3] triazolo [1, 5-a] pyridines has been established. The method involves a copper (II)-catalyzed oxidative N [BOND] N bond formation that uses atmospheric oxygen as the terminal oxidant following hydrazonation in one pot. The use of ethyl acetate as the solvent dramatically promotes the oxidative N [BOND] N bond-formation reaction and enables the application of oxidative ...

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