AbstractAs the complexity of organic molecules utilized by mankind increases, the phenomenon of atropisomerism is more frequently encountered. While a variety of well-established methods enable the control of a stereogenic center, a catalytic method for controlling a stereogenic axis in one substrate is typically unavailable for controlling axial chirality in other substrates with a similar structure. Herein, we report o-amidobiaryl as a flexible platform for chiral phosphoric acid-catalyzed atroposelective dynamic kinetic resolution. To demonstrate our strategy, three distinct types of arylindoles were utilized and reacted intermolecularly with ketomalonate in the presence of chiral phosphoric acid. An investigation of 46 substrates having an aromatic ring in different positions yields the desired products with excellent enantioselectivities. Computational investigation into the origin of enantioselectivity highlights the importance of the NH group. Given the biological significance of indoles, antiproliferative effects have been investigated; our scaffold exhibits good efficacy in this regard.
摘要 随着人类使用的有机分子复杂性的增加,异构现象也越来越频繁地出现。虽然有多种成熟的方法可以控制一个立体中心,但控制一种底物的立体轴的催化方法通常无法控制具有类似结构的其他底物的轴向手性。在此,我们报告了邻氨基二芳基作为手性磷酸催化的异丙选择性动态动力学解析的灵活平台。为了证明我们的策略,我们使用了三种不同类型的芳基吲哚,并在手性磷酸存在下与酮丙二酸发生分子间反应。对 46 种在不同位置具有芳香环的底物进行了研究,结果表明这些底物具有极佳的对映选择性。有关对映体选择性来源的计算研究突出了 NH 基团的重要性。鉴于吲哚的生物学意义,我们对其抗增殖作用进行了研究;我们的支架在这方面表现出了良好的功效。