Hydrogen‐Bonding‐Assisted Cationic Aqua Palladium(II) Complex Enables Highly Efficient Asymmetric Reactions in Water
作者:Taku Kitanosono、Tomoya Hisada、Yasuhiro Yamashita、Shū Kobayashi
DOI:10.1002/anie.202009989
日期:2021.2.15
Metal‐bound water molecules have recently been recognized as a new facet of soft Lewis acid catalysis. Herein, a chiral palladium aqua complex was constructed that enables carbon–hydrogen bonds of indoles to be functionalized efficiently. We embraced a chiral 2,2′‐bipyridine as both ligand and hydrogen‐bond donor to configure a robust, yet highly Lewis acidic, chiral aqua complex in water. Whereas the
金属结合的水分子最近被认为是软路易斯酸催化的一个新方面。本文中,构建了手性钯水络合物,该化合物使吲哚的碳氢键有效地被官能化。我们采用手性2,2'-联吡啶作为配体和氢键供体,以在水中构筑坚固而高度路易斯酸的手性水络合物。尽管在有机溶剂中或在无溶剂条件下无法控制对映选择性,但在水性环境中使用可使σ-吲哚基钯中间体以高度对映选择性的方式有效地反应。因此,这项工作描述了在温和的反应条件下以高度对映选择性的方式转化有机金属中间体的潜在强大的新方法。