Metal-free C–H amination of arene with <i>N</i>-fluorobenzenesulfonimide catalysed by nitroxyl radicals at room temperature
作者:Qi Miao、Zhong Shao、Cuiying Shi、Lifang Ma、Fang Wang、Ruoqi Fu、Haochen Gao、Ziyuan Li
DOI:10.1039/c9cc02739d
日期:——
amination of arenethrough C–H bond cleavage employing N-fluorobenzenesulfonimide (NFSI) as the amination reagent in good to excellent yields with broad arene scope in the absence of any metal, ligand or additive is reported. Unlike previous transition metal-catalysed aminations in which high reaction temperatures are usually necessary, this novel reaction at room temperature is the first example of C–H
Pd(ii)-catalyzed direct C5-arylation of azole-4-carboxylates through double C–H bond cleavage
作者:Ziyuan Li、Ling Ma、Jinyi Xu、Lingyi Kong、Xiaoming Wu、Hequan Yao
DOI:10.1039/c2cc00081d
日期:——
The first palladium-catalyzed direct C5-arylation of azole-4-carboxylates with simple unactivated arenes through double CâH bond cleavage is realized. This protocol provided a straightforward access to diverse 5-arylsubstituted azole-4-carboxylic derivatives with good functional group tolerance.