Cu(OAc)<sub>2</sub>-Promoted Oxidative Cross-Dehydrogenative Coupling Reaction of α-Acylmethyl Malonates with Indole Derivatives to Access 3-Functionalized Indoles and Polycyclic Indoles
作者:Li-Jin Zhou、Kun Wang、Hong-Rong Guan、An-Qi Zheng、Hai-Tao Yang、Chun-Bao Miao
DOI:10.1021/acs.joc.0c00624
日期:2020.6.19
A Cu(OAc)2-promoted oxidative cross-dehydrogenative coupling reaction of α-acylmethyl malonates with indole derivatives was developed. In the case of indoles, the regioselective coupling products were formed through a sequential dehydrogenation–addition–dehydrogenation process. When a second nucleophilic center was located in the 2-position of indoles, further successive nucleophilic cyclization occurred
开发了Cu(OAc)2促进的α-酰基甲基丙二酸酯与吲哚衍生物的氧化交叉脱氢偶联反应。就吲哚而言,区域选择性偶联产物是通过顺序的脱氢-加成-脱氢过程形成的。当第二个亲核中心位于吲哚的2-位时,进一步连续的亲核环化发生,得到多环吲哚衍生物。事实证明,Cu(OAc)2不仅起氧化剂的作用,而且起催化剂的作用。