作者:Qingqing Qi、Xuena Yang、Xiaoping Fu、Shiqing Xu、Ei‐ichi Negishi
DOI:10.1002/anie.201809389
日期:2018.11.12
range of enantiopure (>99 % ee) α‐amino tertiary boronic esters. The configurationally stable α‐N‐Boc substituted tertiary organolithium species and pinacolborane (HBpin) underwent enantiospecific borylation at −78 °C with the formation of a new stereogenic C−B bond. This reaction has a broad scope, enabling the synthesis of various α‐amino tertiary boronic esters in excellent yields and, importantly
在此,我们报道了一种高效且对映体特异性的硼酸酯化方法,可合成多种对映纯(> 99% ee)α-氨基叔硼酸酯。构型稳定的α-N-Boc取代的叔有机锂物质和频哪醇硼烷(HBpin)在-78°C下进行对映体特异性硼化反应,并形成新的立体异构C-B键。该反应范围广泛,能够以优异的产率合成各种α-氨基叔硼酸酯,重要的是,具有普遍优异的对映体特异性(> 99%es)并完全保留构型。