Cu-Catalyzed Hydrocarbonylative C–C Coupling of Terminal Alkynes with Alkyl Iodides
作者:Li-Jie Cheng、Neal P. Mankad
DOI:10.1021/jacs.7b05205
日期:2017.8.2
alkynes with unactivated alkyl iodides has been developed, enabling highly chemo- and regioselective synthesis of unsymmetrical dialkyl ketones. A variety of functional groups are tolerated, and both primary and secondary alkyl iodides react well. An autotandem sequence of two Cu-catalyzed processes is proposed: first hydrocarbonylative coupling of the alkyne and the alkyl iodide, followed by reduction
已经开发出一种铜催化的末端炔烃与未活化的烷基碘的烃基化碳-碳偶联反应,能够高度化学和区域选择性地合成不对称的二烷基酮。可以容忍各种官能团,伯烷基碘和仲烷基碘都能很好地反应。提出了两个铜催化过程的自动串联序列:首先炔烃和烷基碘的烃基化偶联,然后将中间体不饱和酮还原为饱和产物。机理实验表明,烯基铜中间体通过单电子转移激活烷基碘,从而实现自由基羰基化途径。