Tandem Photoredox Catalysis: Enabling Carbonylative Amidation of Aryl and Alkylhalides
作者:José A. Forni、Nenad Micic、Timothy U. Connell、Geethika Weragoda、Anastasios Polyzos
DOI:10.1002/anie.202006720
日期:2020.10.12
visible‐light‐mediated carbonylative amidation of aryl, heteroaryl, and alkyl halides. A tandem catalytic cycle of [Ir(ppy)2(dtb‐bpy)]+ generates a potent iridium photoreductant through a second catalytic cycle in the presence of DIPEA, which productively engages aryl bromides, iodides, and even chlorides as well as primary, secondary, and tertiary alkyl iodides. The versatile in situ generated catalyst is compatible
我们报告了一种新的可见光介导的芳基,杂芳基和烷基卤化物的羰基酰胺化反应。串联的[Ir(ppy)2(dtb-bpy)] +催化循环在DIPEA存在的情况下通过第二个催化循环产生强力的铱光还原剂,该反应性地使芳基溴化物,碘化物,甚至氯化物与伯,仲和叔烷基碘。这种多功能的原位生成的催化剂可与脂族和芳族胺兼容,具有很高的官能团耐受性,并能使复杂的天然产物后期酰胺化。