作者:Zheng‐Jun Wang、Xiangyang Chen、Lei Wu、Jonathan J. Wong、Yong Liang、Yue Zhao、Kendall N. Houk、Zhuangzhi Shi
DOI:10.1002/anie.202016573
日期:2021.4.6
conspicuously underdeveloped. Here, we develop a general strategy for the site‐selective C−Hborylation of pyrroles by using only BBr3 directed by pivaloyl groups, avoiding the use of any metal. The site‐selectivity is generally dominated by chelation and electronic effects, thus forming diverse C2‐borylated pyrroles against the steric effect. The formed products can readily engage in downstream transformations