Stereodivergency in Catalytic Asymmetric Conjugate Addition Reactions of Glycine (Ket)imines
作者:Hun Young Kim、Jian-Yuan Li、Sungkyung Kim、Kyungsoo Oh
DOI:10.1021/ja2100356
日期:2011.12.28
catalytic asymmetric conjugate reactions of glycine (ket)imines with nitroalkenes have been achieved using various chiral catalyst systems derived from a multidentate amino alcohol (1). The stepwise nature of the [3 + 2] cycloaddition reactions of N-metalated azomethine ylides has also been demonstrated by highly enantio- and diastereoselective syntheses of exo-5 and endo-8 from the respective syn-4
已经使用衍生自多齿氨基醇 (1) 的各种手性催化剂系统实现了甘氨酸(酮)亚胺与硝基烯烃的立体发散催化不对称共轭反应。N-金属化偶氮甲碱叶立德的 [3 + 2] 环加成反应的逐步性质也已通过从各自的 Syn-4 和 anti-7 共轭加成产物对 exo-5 和 end-8 进行高度对映和非对映选择性合成得到证明以一锅串联方式。