Preparation of Quaternary Centers via Nickel-Catalyzed Suzuki–Miyaura Cross-Coupling of Tertiary Sulfones
作者:Zachary T. Ariki、Yuuki Maekawa、Masakazu Nambo、Cathleen M. Crudden
DOI:10.1021/jacs.7b10855
日期:2018.1.10
benzylic and allylic sulfones with arylboroxines. A variety of tertiary sulfones, which can easily be prepared via a deprotonation-alkylation route, were reacted to afford symmetric and unsymmetric quaternary products in good yields. We highlight the use of either BrettPhos or Doyle's phosphines as effective ligands for these challenging desulfonative coupling reactions. The utility of this methodology
我们描述了叔苄基和烯丙基砜与芳基环硼烷的镍催化 Suzuki-Miyaura 交叉偶联的开发。可以通过去质子化-烷基化路线轻松制备的各种叔砜反应以良好的收率提供对称和不对称季产物。我们强调使用 BrettPhos 或 Doyle 膦作为这些具有挑战性的脱磺化偶联反应的有效配体。这种方法的实用性在维生素 D 受体调节剂类似物的简明合成中得到了证明。