Enantioselective Synthesis of Chiral Piperidines via the Stepwise Dearomatization/Borylation of Pyridines
作者:Koji Kubota、Yuta Watanabe、Keiichi Hayama、Hajime Ito
DOI:10.1021/jacs.6b01375
日期:2016.4.6
developed a novel approach for the synthesis of enantioenriched 3-boryl-tetrahydropyridines via the Cu(I)-catalyzed regio-, diastereo-, and enantioselective protoborylation of 1,2-dihydropyridines, which were obtained by the partial reduction of the pyridine derivatives. This dearomatization/enantioselective borylation stepwise strategy provides facile access to chiral piperidines together with the stereospecific
我们开发了一种通过 Cu(I) 催化的 1,2-二氢吡啶的区域选择性、非对映选择性和对映选择性原硼化反应合成富含对映体的 3-硼基四氢吡啶的新方法,该方法是通过部分还原吡啶获得的衍生品。这种脱芳构化/对映选择性硼酸化逐步策略提供了轻松获得手性哌啶以及从容易获得的起始材料中立体定向 CB 键的立体有择转化的途径。此外,该方法在抗抑郁药物 (-)-帕罗西汀的简明合成方面的实用性得到了证明。还描述了反应机理的理论研究。