Palladium-Catalyzed Aerobic Oxidative C–H Olefination with Removable 1,2,3-Triazole Directing Group
作者:Xiaohan Ye、Xiaodong Shi
DOI:10.1021/ol5019807
日期:2014.9.5
achieved with removable 1,2,3-triazole auxiliary through Pd-catalyzed C–H activation. Excellent yields were received even when molecular O2 (1 atm) was used as the terminal oxidant. Other heterocyclic directing groups, such as pyridine and quinoline, gave poor reactivity under this aerobic oxidative condition, which highlighted the unique reactivity of triazole in promoting directed C–H activation.
邻芳烃-olefination通过Pd催化的C-H活化带有可拆卸1,2,3-三唑辅助实现。即使使用分子O 2(1 atm)作为末端氧化剂,也能获得极好的收率。在这种好氧氧化条件下,其他杂环导向基团(例如吡啶和喹啉)的反应性较差,这突出了三唑在促进定向C–H活化方面的独特反应性。