Ligand‐Controlled C−O Bond Coupling of Carboxylic Acids and Aryl Iodides: Experimental and Computational Insights
作者:Li Li、Feifei Song、Xiumei Zhong、Yun‐Dong Wu、Xinhao Zhang、Jiean Chen、Yong Huang
DOI:10.1002/adsc.201901136
日期:2020.1.7
Palladium‐catalyzed cross‐coupling reactions between carboxylic acids and aryl halides have several possible competitive pathways. Decarboxylative C−C bond coupling and C−H arylation are well established in the literature. However, direct C−O bond coupling between carboxylic acids and aryl halides has received little success. In this report, we describe a protocol for exclusive C−O bond formation,
羧酸与芳基卤化物之间的钯催化交叉偶联反应有几种可能的竞争途径。脱羧CC键偶联和CH芳基化在文献中已得到很好的建立。但是,羧酸与芳基卤化物之间的直接C-O键偶联几乎没有成功。在本报告中,我们描述了由双齿N,N-配体(例如1,10-菲咯啉)实现的排他性C-O键形成的协议。该反应通常适用于多种羧酸和碘代芳烃。实验证据和计算结果表明,脱羧碳-碳键偶联的替代途径具有较高的能垒。