Visible-Light-Induced Direct Oxidative C−H Amidation of Heteroarenes with Sulfonamides
作者:Kun Tong、Xiaodong Liu、Yan Zhang、Shouyun Yu
DOI:10.1002/chem.201604014
日期:2016.10.24
A direct oxidative C−H amidation of heteroarenes with sulfonamides via nitrogen‐centered radicals has been achieved. Nitrogen‐centered radicals are directly generated from oxidative cleavage of N−H bonds under visible‐light photoredox catalysis. Sulfonamides, which are easily accessed, are used as tunable nitrogen sources and bleach (aqueous NaClO solution) is used as the oxidant. A variety of heteroarenes
已经实现了杂芳烃与磺酰胺通过氮中心自由基的直接氧化CH H酰胺化反应。氮中心自由基是在可见光光氧化还原催化下,NH键的氧化裂解直接产生的。易于使用的磺酰胺用作可调氮源,而漂白剂(NaClO水溶液)用作氧化剂。包括吲哚,吡咯和苯并呋喃在内的各种杂芳烃都可以高产率(高达92%)进行酰胺化反应。这些反应具有高度的区域选择性,所有产物均被分离为单一的区域异构体。