作者:Yan Li、Deguang Liu、Lei Wan、Jun-Yang Zhang、Xi Lu、Yao Fu
DOI:10.1021/jacs.2c06279
日期:2022.8.3
Regiodivergent alkyne hydroalkylation to generate different isomers of an alkene from the same alkyne starting material would be beneficial; however, it remains a challenge. Herein, we report a ligand-controlled cobalt-catalyzed regiodivergent alkyne hydroalkylation. The sensible selection of bisoxazoline (L1) and pyridine–oxazoline (L8) ligands led to reliable and predictable protocols that provided
区域发散的炔烃加氢烷基化以从相同的炔烃原料产生不同的烯烃异构体将是有益的;然而,这仍然是一个挑战。在此,我们报告了一种配体控制的钴催化区域发散炔烃加氢烷基化。双恶唑啉 ( L1 ) 和吡啶-恶唑啉 ( L8 ) 配体的合理选择导致可靠且可预测的方案提供具有高E / Z的 ( E )-1,2-二取代和 1,1-二取代烯烃立体选择性和区域异构比从相同的末端炔烃和卤代烷底物开始,在内部炔烃的情况下产生三取代烯烃。该方法对末端和内部炔烃具有广泛的适用范围,具有广泛的活化和未活化烷基卤化物,并显示出优异的官能团相容性。