Single-Electron-Transfer-Induced Coupling of Arylzinc Reagents with Aryl and Alkenyl Halides
作者:Eiji Shirakawa、Fumiko Tamakuni、Eugene Kusano、Nanase Uchiyama、Wataru Konagaya、Ryo Watabe、Tamio Hayashi
DOI:10.1002/anie.201308200
日期:2014.1.7
reagents/zinc chloride, were found to undergo coupling with aryl and alkenyl halides without the aid of transition‐metal catalysis to give biaryls and styrene derivatives, respectively. In this context, we have already reported the corresponding reaction using aryl Grignard reagents instead of arylzinc reagents. Compared with the Grignard cross‐coupling, the present reaction features high functional‐group
发现由芳基卤化物/锌粉或芳基格氏试剂/氯化锌制备的芳基锌试剂在不借助过渡金属催化的情况下与芳基和烯基卤化物偶合,分别得到联芳基和苯乙烯衍生物。在这种情况下,我们已经报道了使用芳基格氏试剂代替芳基锌试剂的相应反应。与格利雅交叉偶联相比,本反应具有较高的官能团耐受性,亲电基团(如烷氧羰基和氰基)可兼用作芳基锌试剂和芳基卤化物上的取代基。芳基卤化物接收一个电子,从而被活化为相应的阴离子基团,与芳基锌试剂反应,从而产生交叉偶联产物。