Versatile C(sp<sup>2</sup>)−C(sp<sup>3</sup>) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes
作者:William M. Dean、Mindaugas Šiaučiulis、Thomas E. Storr、William Lewis、Robert A. Stockman
DOI:10.1002/anie.201602264
日期:2016.8.16
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy
手性(杂)芳基苄基亚砜与格利雅试剂的反应得到对映体纯的二芳基烷烃,收率高达98%,对映体过量大于99.5%。该配体偶联反应可耐受多种取代模式,并可以通过三个操作简单的步骤从市售试剂中进入化学空间的不同区域。该策略提供了对传统上由过渡金属催化的交叉偶联合成的缺电子的杂芳族化合物的正交访问,并规避了与原金属脱金属和β-氢化物消除相关的常见问题。