作者:Chang‐Yun Shi、Jungmin Eun、Timothy R. Newhouse、Liang Yin
DOI:10.1002/anie.202016081
日期:2021.4.19
Catalytic asymmetric remote conjugate borylation is challenging as the control of regioselectivity is not trivial, the electrophilicity of remote sites is extenuated, and the remote asymmetric induction away from the carbonyl group is difficult. Herein, catalytic asymmetric conjugate 1,6‐, 1,8‐ and 1,10‐borylation was developed with excellent regioselectivity, which delivered α‐chiral boronates in moderate
催化不对称远程共轭硼化具有挑战性,因为区域选择性的控制并非微不足道,远程位点的亲电性减弱,远离羰基的远程不对称诱导很困难。在此,开发了具有优异区域选择性的催化不对称共轭共轭 1,6-、1,8- 和 1,10-硼酸酯,以中等至高产率和高对映选择性提供 α-手性硼酸盐。所产生的手性硼酸盐顺利地经历了氧化、交叉偶联和单碳同系化,以中等收率得到具有优异立体保留性的多功能手性化合物。此外,使用 DFT 计算进行了立体力学分析,这提供了对区域选择性起源的见解。最后,现在的1,