作者:Jinlei Chen、Qingyu Pang、Yanbo Sun、Xingwei Li
DOI:10.1021/jo1025546
日期:2011.5.6
Readily available Pd(II) chloride catalysts can catalyze selective and efficient oxidative coupling between N-aryl-2-aminopyridines and internal alkynes to yield N-(2-pyridyl)indoles. This process involves the ortho C−H activation of N-aryl-2-aminopyridines, and CuCl2 was used as an oxidant. Compared to our previously reported Rh(III)-catalyzed synthesis of this class of product, this method is advantageous
容易获得的Pd(II)氯化物催化剂可以催化之间的选择性的和有效的氧化偶合ñ -芳基-2-氨基吡啶和内部炔烃,得到ñ - (2-吡啶基)吲哚。该过程涉及N-芳基-2-氨基吡啶的邻位CH活化,并且CuCl 2被用作氧化剂。与我们先前报道的Rh(III)催化的这类产物的合成相比,该方法在炔烃和成本效益较高的Pd(II)催化剂方面具有优势。分子氧可以用作末端氧化剂。