Facile One-Pot Synthesis of [1, 2, 3]Triazolo[1, 5-<i>a</i>]Pyridines from 2-Acylpyridines by Copper(II)-Catalyzed Oxidative NN Bond Formation
作者:Tasuku Hirayama、Satoshi Ueda、Takahiro Okada、Norihiko Tsurue、Kensuke Okuda、Hideko Nagasawa
DOI:10.1002/chem.201302997
日期:2014.4.1
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 NN 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 NN bond‐formation reaction and enables the application
已经建立了一种有效且简单的合成各种[1,2,3]三唑并[ 1,5- α ]吡啶的方法。该方法涉及铜(II)催化的氧化NN键的形成,该反应在一个罐中进行azo化反应后,将大气中的氧气用作末端氧化剂。使用乙酸乙酯作为溶剂可显着促进氧化性NN键的形成反应,并使氧化环化在有效的一锅法反应中得到应用。根据光谱研究的结果提出了反应机理。