Computationally Assisted Mechanistic Investigation and Development of Pd-Catalyzed Asymmetric Suzuki–Miyaura and Negishi Cross-Coupling Reactions for Tetra-<i>ortho</i>-Substituted Biaryl Synthesis
作者:Nitinchandra D. Patel、Joshua D. Sieber、Sergei Tcyrulnikov、Bryan J. Simmons、Daniel Rivalti、Krishnaja Duvvuri、Yongda Zhang、Donghong A. Gao、Keith R. Fandrick、Nizar Haddad、Kendricks So Lao、Hari P. R. Mangunuru、Soumik Biswas、Bo Qu、Nelu Grinberg、Scott Pennino、Heewon Lee、Jinhua J. Song、B. Frank Gupton、Neil K. Garg、Marisa C. Kozlowski、Chris H. Senanayake
DOI:10.1021/acscatal.8b02509
日期:2018.11.2
Unique ligands for the Suzuki–Miyaura reaction vs the Negishi reaction were identified. A computational study on these Suzuki–Miyaura and Negishi cross-coupling reactions enabled an understanding in the differences between the enantiodiscriminating events between these two cross-coupling reactions. These results support that enantioselectivity in the Negishi reaction results from the reductive elimination
金属催化的交叉偶联反应在学术界和工业界广泛用于合成联芳基衍生物,用于医学和材料科学。这些方法在制备四邻位取代的联芳基中的应用导致手性阻转异构产物,这为使用催化剂控制开发不对称的交叉偶联程序提供了机会,以获取这些重要的化合物。研究了不对称Pd催化的Suzuki-Miyaura和Neshishi交叉偶联反应形成四邻位取代的联芳基的过程,方法是收集P-手性二氢苯并恶唑磷(BOP)和二氢苯并氮杂磷(BAP)配体。Suzuki-Miyaura和Negishi交叉偶联反应的对映体选择性分别高达95:5和85:15。确定了铃木-宫浦反应与根岸反应的独特配体。对这些Suzuki-Miyaura和Negishi交叉偶联反应的计算研究使我们能够理解这两个交叉偶联反应之间的对映区别事件之间的差异。这些结果表明,根除反应中对映选择性是由还原消除步骤产生的,