Palladium-Catalyzed Late-Stage <i>ortho</i>-C–H Bond Aroylation of Anilines Using 4-Methoxy-2-pyridinyl as a Removable Directing Group
作者:Jean-Ho Chu、Meng-Fan Chiang、Chin-Wei Li、Zhe-Hong Su、Shao-Chi Lo、Ming-Jung Wu
DOI:10.1021/acs.organomet.9b00119
日期:2019.5.13
A synthetic methodology for the late-stage ortho-C–H bond aroylation of anilines with aryl aldehydes led to a variety of ortho-aroylated anilines by the use of palladium(II) acetate, tert-butyl hydroperoxide, and 1,4-dioxane as the catalyst, oxidant, and solvent, respectively, is presented. An N-phenylpyridin-2-amine palladacycle was isolated and characterized by X-ray crystallography. Controlled experiments
通过使用乙酸钯(II),叔丁基氢过氧化物和1,4-二恶烷,苯胺与芳基醛的晚期邻位C-H键芳基化的合成方法导致了多种邻位芳基化的苯胺分别作为催化剂,氧化剂和溶剂。一个Ñ -phenylpyridin -2-胺钯化合物被分离和表征通过X射线晶体学。进行了控制实验,自由基捕获实验和动力学同位素效应实验,以支持所提出的反应机理。成功开发了基于已开发方法的2-氨基二苯甲酮和9(10 H)-ac啶酮的合成方法。