Cp*Rh(<scp>iii</scp>) catalyzed <i>ortho</i>-halogenation of <i>N</i>-nitrosoanilines by solvent-controlled regioselective C–H functionalization
作者:Qiujun Peng、Jian Hu、Jiyou Huo、Hongshun Yuan、Lanting Xu、Xianhua Pan
DOI:10.1039/c8ob00601f
日期:——
We present a novel, efficient, and regioselective method for the rhodium-catalyzed direct C–H ortho-halogenation of anilines that involves a removable N-nitroso directing group. This method featured mild reaction conditions, wide substrate scope, good functional group tolerance and satisfactory yields. To maintain the high ortho-regioselectivity and conversion, increasing the steric hindrance of the
我们提出了一种新颖,有效和区域选择性的方法,用于铑催化苯胺的直接C–H邻位卤化反应,其中涉及可移动的N-亚硝基导向基团。该方法反应条件温和,底物范围宽,官能团耐受性好,收率令人满意。为了维持高邻位选择性和转化率,增加溶剂的空间位阻是至关重要的。初步的机理研究表明,C–H活化可能参与速率测定步骤。