Enantioselective, Thiourea-Catalyzed Intermolecular Addition of Indoles to Cyclic N-Acyl Iminium Ions
作者:Emily A. Peterson、Eric N. Jacobsen
DOI:10.1002/anie.200902420
日期:——
Fair game for indoles, N‐acyl iminium ion intermediates underwent intermolecular addition by these nucleophiles under the catalysis of a chiral thiourea Schiff base derivative. A variety of functionalized indole frameworks were assembled with high enantioselectivity from simple precursors by this method (see scheme; TMS=trimethylsilyl; R=H, Me, vinyl, OMe, F, Cl, Br; R1=benzyl, methyl; n=1,2).
吲哚的公平游戏,N-酰基亚胺离子中间体在手性硫脲席夫碱衍生物的催化下由这些亲核试剂进行分子间加成。通过这种方法从简单的前体以高对映选择性组装了各种功能化的吲哚骨架(参见方案;TMS=三甲基甲硅烷基;R=H、Me、乙烯基、OMe、F、Cl、Br;R 1 = 苄基、甲基;n = 1,2)。