Chemoselective Carbophilic Addition of α-Diazoesters through Ligand-Controlled Gold Catalysis
作者:Yumeng Xi、Yijin Su、Zhaoyuan Yu、Boliang Dong、Edward J. McClain、Yu Lan、Xiaodong Shi
DOI:10.1002/anie.201404946
日期:2014.9.8
α‐aryldiazoesters was achieved through ligand‐controlled gold catalysis. Unlike a dirhodium catalyst (which promotes CH insertion and cyclopropanation) and a copper catalyst (which catalyzes OH and NH insertions), the gold catalyst with an electron‐deficient phosphite as the ancillary ligand exclusively gave the carbophilic addition product, thus representing a new and efficient approach to form “carbophilic
芳烃和1,3-二酮对α-芳基重氮化合物的化学选择性加成是通过配体控制的金催化实现的。不像二铑催化剂(促进ç ħ插入和环丙烷)和铜催化剂(其催化ö 氢和氮 ħ插入),与缺电子亚磷酸酯作为辅助配位体的金催化剂只得到carbophilic加成产物因此,代表了一种新的有效方法来形成“嗜碳碳阳离子”,该碳阳离子选择性地与碳亲核试剂反应。