Enantio- and Diastereoselective Assembly of Tetrahydrofuran and Tetrahydropyran Skeletons with All-Carbon-Substituted Quaternary Stereocenters
作者:Zhilong Chen、Jianwei Sun
DOI:10.1002/anie.201306801
日期:2013.12.16
desymmetrization of meso 1,3‐diols through mono‐transacetalization with a tethered acetal unit (see scheme). This new strategy leads to the efficient assembly of tetrahydrofuran and tetrahydropyran skeletons bearing remote all‐carbon‐substituted quaternary stereocenters that are not straightforward to access by other methods.
手性磷酸(HB *)通过束缚乙缩醛单元的单反缩醛化催化中消旋1,3-二醇的不对称脱对称反应(参见方案)。这项新策略可有效组装带有远程全碳取代的季立体中心的四氢呋喃和四氢吡喃骨架,而其他方法无法直接访问这些骨架。