The direct functionalization of sp3 CH bonds through a tandem 1,5‐hydride shift/ring closure is described. Various optically active spirooxindole tetrahydroquinoline derivatives bearing contiguous quaternary or tertiary stereogenic carbon centers were readily synthesized. A chiral scandium complex of N,N′‐dioxide promoted the reactions in good yields (up to 97 %) with excellent diastereoselectivities
的
SP的直接官能3 Ç H键通过串联1,5-
氢化物转变/环闭合进行说明。容易合成具有连续的季或叔立体位碳中心的各种旋光性螺并
吲哚四氢喹啉衍
生物。N,N'-二氧化物的手性scan络合物以良好的非对映选择性(> 20:1)和对映选择性(高达94%ee)促进反应,收率高(高达97%)。进行了动力学同位素效应(KIE)实验和手性底物的内部氧化还原反应,结果提供了有趣的信息,有助于阐明反应机理。