The Pd-catalyzed oxidative kinetic resolution of secondary alcohols afforded enantioenriched allylic alcohols with high selectivity. These alcohols were transformed into arylcycloalkenes with enantioenriched tertiary and quaternary stereocenters through a two-step vinylation and Lewis acid promoted Claisen rearrangement. Subsequent Pd-catalyzed oxidative cyclization of a Claisen product afforded a 5,5-fused tetrahydrofuran.
通过
钯催化氧化动力学解析仲醇,可获得高选择性的对映体烯丙基醇。通过两步
乙烯基化和
路易斯酸促进的克莱森重排,这些醇被转化为具有对映体三级和四级立体中心的芳基环烯。随后在 Pd 催化下,Claisen 产物发生氧化环化反应,得到了 5,5 熔合
四氢呋喃。