Site- and Enantiodifferentiating C(sp<sup>3</sup>)–H Oxidation Enables Asymmetric Access to Structurally and Stereochemically Diverse Saturated Cyclic Ethers
作者:Shutao Sun、Yiying Yang、Ran Zhao、Dongju Zhang、Lei Liu
DOI:10.1021/jacs.0c09636
日期:2020.11.11
A manganese-catalyzed site- and enantiodifferentiating oxidation of C(sp3)-H bonds in saturated cyclic ethers has been described. The mild and practical method is applicable to a range of tetrahydrofurans, tetrahydropyrans, and medium-sized cyclic ethers with multiple stereocenters and diverse substituent patterns in high efficiency with extremely efficient site- and enantiodiscrimination. Late-stage
已经描述了饱和环醚中 C(sp3)-H 键的锰催化位点和对映分化氧化。这种温和实用的方法适用于一系列四氢呋喃、四氢吡喃和中等大小的具有多个立构中心和不同取代基模式的环醚,具有非常有效的位点和对映体区分。进一步证明了在复杂生物活性分子中的后期应用。通过结合实验和计算的机理研究阐明了立体选择性的反应机制和起源。使用醚底物作为限制试剂的能力,以及广泛的底物范围和高水平的手性识别,