Silyl‐inspired spirocycle: The title reaction is the first example of a catalytic asymmetric [3+2] annulation reaction with allylsilanes. The annulation reaction utilizes a chiral ScCl2(SbF6)/L catalyst and TMSCl as a promoter to afford spirooxindoles in excellent enantioselectivity at room temperature. The SiC bond can be oxidized to deliver hydroxy‐substituted spirooxindoles. TMS=trimethylsilyl
Silyl-inspired spirocycle:标题反应是与
烯丙基
硅烷催化不对称 [3+2]环化反应的第一个例子。环化反应利用手性 ScCl 2 (SbF 6 )/L
催化剂和
TMSCl 作为
促进剂,在室温下以优异的对映选择性提供螺环
吲哚。所述Si C键的可被
氧化以提供羟基取代spirooxindoles。
TMS=三
甲基甲
硅烷基。