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)。