We disclose an l-isoleucine-derived amide phosphine-catalyzed trimerization of γ-aryl-3-butynoates, which undergo an isomerization to allenoate, [3 + 2] cyclization, and Michael addition cascade. Exocyclopentene derivatives bearing an all-carbon quaternary stereocenter were constructed stereospecifically and enantioselectively. A wide variety of γ-aryl-3-butynoates could be employed to deliver optically
我们公开了一种l-
异亮氨酸衍生的酰胺膦催化的 γ-芳基-3-
丁酸酯的三聚化,其经历异构化为烯
丙酸酯、[3 + 2] 环化和迈克尔加成级联。带有全碳四元立体中心的外
环戊烯衍
生物以立体定向和对映选择性构建。多种 γ-芳基-3-
丁酸酯可用于以中等至良好的收率提供光学纯的
环戊烯衍
生物,ee 值≥95%,在大多数情况下≥98%。