The first organocatalytic asymmetric sequential allylic alkylationâcyclization of MoritaâBaylisâHillman carbonates and 3-hydroxyoxindoles has been developed to afford spirooxindoles bearing α-methylene-γ-butyrolactone motifs in 25â85% yield, 60â94% ee and up to >20â:â1 diastereoselectivity.
第一个有机催化不对称连续烯丙基烷基化-环化 Morita-Baylis-Hillman
碳酸酯和 3-羟基
吲哚已被开发出来,可提供带有 α-亚甲基-
γ-丁内酯基序的螺
吲哚,产率 25-85%,产率 60-60 94% ee 和高达 >20-:-1 非对映选择性。