Core-Structure-Motivated Design of a Phosphine-Catalyzed [3 + 2] Cycloaddition Reaction: Enantioselective Syntheses of Spirocyclopenteneoxindoles
作者:Bin Tan、Nuno R. Candeias、Carlos F. Barbas
DOI:10.1021/ja110147w
日期:2011.4.6
A novel organocatalytic asymmetric [3+2] cycloaddition reaction between methyleneindolinones and allylic compounds yielding complex spirocyclopentaneoxindoles has been developed. It provides extraordinary levels of enantioselective control involving a chiral phosphine as a nucleophilic organocatalyst. Simple precursors were used under mild conditions to construct oxindole derivatives with high enantiopurity
已开发出一种新型有机催化不对称 [3+2] 环加成反应,在亚甲基吲哚酮和烯丙基化合物之间生成复杂的螺环戊烷氧吲哚。它提供了非凡水平的对映选择性控制,涉及手性膦作为亲核有机催化剂。在温和的条件下使用简单的前体来构建具有高对映纯度和结构多样性的羟吲哚衍生物。这种方法应该可用于这些有趣化合物的药物化学和面向多样性的合成。