Selective
<i>ortho</i>
‐Functionalization of Adamantylarenes Enabled by Dispersion and an Air‐Stable Palladium(I) Dimer
作者:Indrek Kalvet、Kristina Deckers、Ignacio Funes‐Ardoiz、Guillaume Magnin、Theresa Sperger、Marius Kremer、Franziska Schoenebeck
DOI:10.1002/anie.202001326
日期:2020.5.11
that Pd-catalyzed cross-coupling at sites of severe steric hindrance are disfavored, we herein show that the oxidative addition to C-Br ortho to an adamantyl group is as favored as the corresponding adamantyl-free system due to attractive dispersion forces. This enabled the development of a fully selective arylation and alkylation of C-Br ortho to an adamantyl group, even if challenged with competing
与普遍认为不利于在严重空间位阻位点上的 Pd 催化交叉偶联相反,我们在此表明,由于有吸引力,C-Br 邻位金刚烷基的氧化加成与相应的无金刚烷基体系一样受欢迎。分散力。这使得能够开发出金刚烷基邻位 C-Br 的完全选择性芳基化和烷基化,即使受到竞争性非受阻 C-OTf 或 C-Cl 位点的挑战。该方法利用空气稳定的 PdI 二聚体,能够在 5-30 分钟内直接获得多种取代的具有治疗意义的金刚芳烃。