Catalytic Enantioselective Pinacol and Meinwald Rearrangements for the Construction of Quaternary Stereocenters
作者:Hua Wu、Qian Wang、Jieping Zhu
DOI:10.1021/jacs.9b04551
日期:2019.7.24
enantioselective pinacol rearrangement is ex-tremely challenging due to the likelihood involvement of the carbeni-um intermediate that renders the stereochemical communication between catalyst and substrate difficult to achieve. Herein, we report chiral N-triflyl phosphoramide-catalyzed enantioselective pinacol rearrangement of 1,2-tertiary diols and mechanistically related Meinwald rearrangement of tetrasubstituted
对映选择性频哪醇重排的发展极具挑战性,因为碳鎓中间体可能参与其中,这使得催化剂和底物之间的立体化学通讯难以实现。在此,我们报告了手性 N-三氟甲基磷酰胺催化的 1,2-叔二醇的对映选择性频哪醇重排和机械相关的四取代环氧化物的 Meinwald 重排,用于合成对映体富集的 2-炔基-2-芳基环己酮和 2,2-环己酮二芳基分别。还记录了以催化对映选择性频哪醇重排为关键战略步骤的 (+)-膜的全合成。