Enantioselective Synthesis of Atropisomeric Biaryls by Pd‐Catalyzed Asymmetric Buchwald–Hartwig Amination
作者:Peng Zhang、Xiao‐Mei Wang、Qi Xu、Chang‐Qiu Guo、Peng Wang、Chuan‐Jun Lu、Ren‐Rong Liu
DOI:10.1002/anie.202108747
日期:2021.9.27
N−C Biaryl atropisomers are prevalent in natural products and bioactive drug molecules. However, the enantioselective synthesis of such molecules has not developed significantly. Particularly, the enantioselective synthesis of N−C biaryl atropisomers by stereoselective metal-catalyzed aryl amination remains unprecedented. Herein, a Pd-catalyzed cross-coupling strategy is presented for the synthesis
NC 联芳基阻转异构体普遍存在于天然产物和生物活性药物分子中。然而,此类分子的对映选择性合成尚未显着发展。特别是,通过立体选择性金属催化芳基胺化反应对映选择性合成 NC 联芳基阻转异构体仍然是前所未有的。在此,提出了一种用于合成 NC 轴向手性联芳基分子的 Pd 催化交叉偶联策略。获得了广谱的 NC 轴向手性化合物,具有出色的对映选择性(高达 99 % ee)和良好的产率(高达 98 %)。该反应的实用性在有用的生物分子的合成中得到验证。