Atroposelective Silylation of 1,1′‐Biaryl‐2,6‐diols by a Chiral Counteranion Directed Desymmetrization Enhanced by a Subsequent Kinetic Resolution
作者:Min Zhu、Hua‐Jie Jiang、Illia Sharanov、Elisabeth Irran、Martin Oestreich
DOI:10.1002/anie.202304475
日期:2023.7.3
achieved with a silylium-ion-like silicon electrophile paired with a List-type imidodiphosphorimidate (IDPi). The initial enantioinduction of the desymmetrization is further enhanced by a downstream kinetic resolution that kinetically selects the monosilylated minor enantiomer to form the corresponding bissilylated diol (see Scheme; TBS=tert-butyldimethylsilyl).
联芳基二醇的对映选择性甲硅烷基化是通过硅基离子状硅亲电子试剂与List型亚氨基二磷酸酯(IDPi)配对来实现的。去对称化的初始对映诱导通过下游动力学拆分进一步增强,下游动力学拆分在动力学上选择单甲硅烷基化的次要对映体以形成相应的双甲硅烷基化二醇(参见方案;TBS=叔丁基二甲基甲硅烷基)。