Metal-free (Boc)<sub>2</sub>O-mediated C4-selective direct indolation of pyridines using TEMPO
作者:Wen-Bing Qin、Jia-Yi Zhu、Yu-Bo Kong、Yun-Hong Bao、Zheng-Wang Chen、Liang-Xian Liu
DOI:10.1039/c4ob00356j
日期:——
Direct metal-free C-4-selective indolation of pyridines is achieved for the first time using TEMPO and (Boc)2O. A variety of substituents on both indoles and pyridines are tolerated to give 3-(pyridin-4-yl)-1H-indole derivatives in moderate to excellent yields. This finding provides a novel approach for developing metal-free C–H functionalization of pyridines.