Synthesis and Application of 2,6-Bis(trifluoromethyl)-4-pyridyl Phosphanes: The Most Electron-Poor Aryl Phosphanes with Moderate Bulkiness
作者:Toshinobu Korenaga、Aram Ko、Kotaro Uotani、Yuki Tanaka、Takashi Sakai
DOI:10.1002/anie.201104588
日期:2011.11.4
The poor will be rich: BFPy phosphanes (see scheme) mimic the electronic and steric characters of P(C6F5)3 and PPh3, respectively. These novel ligands showed a large ligand acceleration effect on Stille coupling, the Rh‐catalyzed 1,2‐addition of aryl boronic acid to unactivated ketones and the asymmetric arylation of N‐tosylimine using phenylboronic acid.
穷人将变得富有:BFPy膦(参见方案)分别模仿P(C 6 F 5)3和PPh 3的电子和位阻特征。这些新颖的配体对Stille偶联,Rh催化的1,2-芳基硼酸加成到未活化的酮上以及N-甲苯磺胺使用苯基硼酸的不对称芳基化表现出很大的配体促进作用。