<i>t</i>-BuONa-mediated direct C–H halogenation of electron-deficient (hetero)arenes
作者:Xia Liu、Xin Zhao、Fushun Liang、Baoyi Ren
DOI:10.1039/c7ob03081a
日期:——
An efficient halogenation of electron-deficient (hetero)arenes is described. The reaction utilizes common t-BuONa as a catalyst (for iodination) or a promoter (for bromination and chlorination), and perfluorobutyl iodide, CBr4 or CCl4 as the readily-available halogenating agents, respectively. The protocol features broad scope, high efficiency, mild conditions and gram scalability. An ionic pathway
描述了电子缺陷(杂)芳烃的有效卤化。该反应利用普通的t- BuONa作为催化剂(用于碘化)或促进剂(用于溴化和氯化),并使用全氟丁基碘化物,CBr 4或CCl 4作为容易获得的卤化剂。该协议具有范围广,效率高,条件温和和克扩展性强的特点。提出了涉及卤素键形成和嗜盐攻击的离子途径。在可见光介导的C芳基–C芳基交叉偶联反应中证明了所得碘化杂芳烃的效用。