<i>para</i>
‐Selective Radical Trifluoromethylation of Benzamide Derivatives via Iminium Intermediates
作者:Zhanyong Tang、Ke Mo、Xiaoqiang Ma、Jialin Huang、Depeng Zhao
DOI:10.1002/anie.202208089
日期:2022.9.5
A para-selective C−H trifluoromethylation of benzamide derivatives was developed that makes use of iminium intermediates. The iminium species, formed in situ from Tf2O, pyridine and amides, feature greatly enhanced reactivity at the para-position towards radical-type nucleophilic C−H trifluoromethylation.
使用亚胺中间体开发了苯甲酰胺衍生物的对位选择性 C-H 三氟甲基化。由 Tf 2 O、吡啶和酰胺原位形成的亚胺物种在对位上对自由基型亲核 C-H 三氟甲基化具有显着增强的反应性。