Copper-catalyzed atroposelective formal [4+1] annulation of 1,2-diketones with vinyl cations
作者:Ze-Shu Wang、Hao-Jin Xu、Yang-Bo Chen、Long-Wu Ye、Bo Zhou、Peng-Cheng Qian
DOI:10.1039/d3cc04817a
日期:——
copper-catalyzed atroposelective formal [4+1] annulation of 1,2-diketones with vinyl cations, enabling the efficient and atom-economical construction of axially chiral arylpyrroles bearing 1,3-dioxole moieties with good to excellent enantioselectivities under mild reaction conditions. Importantly, this methodology continues the first enantioselective formal [4+1] annulation of 1,2-diketones.
容易获得的 1,2-二酮的对映选择性转化代表了获得对映体富集分子的快速途径。在此,我们公开了铜催化的1,2-二酮与乙烯基阳离子的对转选择性形式[4+1]环化,使得能够高效且原子经济地构建带有1,3-间二氧杂环戊烯部分的轴向手性芳基吡咯,并具有良好至优异的对映选择性在温和的反应条件下。重要的是,该方法延续了 1,2-二酮的第一个对映选择性正式 [4+1] 环化。