Silver-promoted cross-coupling of substituted allyl(trimethyl)silanes with aryl iodides by palladium catalysis
作者:Zhen-Lin Hou、Fan Yang、Zhibing Zhou、Yu-Fei Ao、Bo Yao
DOI:10.1016/j.tetlet.2018.11.026
日期:2018.12
A ligand-free Pd-catalyzed cross-coupling of substituted allyl(trimethyl)silanes with aryl iodides enabled by silver salts was developed. This reaction delivered allylic arenes chemoselectively and regioselectively. The study suggested that the reaction might proceed through oxidative addition of ArI to Pd(0) followed by halide abstraction to give an electrophilic complex ArPdX, which further reacted
开发了无配位体的钯催化的取代的烯丙基(三甲基)硅烷与由银盐形成的芳基碘化物的交叉偶联。该反应通过化学选择性和区域选择性递送烯丙基芳烃。研究表明该反应可能通过将ArI氧化加成到Pd(0)上,然后进行卤化物的抽提而得到亲电配合物ArPdX,后者通过亲电加成/去甲硅烷基化/还原消除反应与烯丙基三甲基硅烷进一步反应得到烯丙基芳基偶联剂产品。