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'Organo-metal' synergistic catalysis: The 1+1 2 effect for the construction of spirocyclopentene oxindoles

机译:“有机金属”协同催化:螺环戊烯恶吲哚的构建具有1 + 1> 2效应

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摘要

Synergy in action: A highly efficient "organo-metal" synergistic catalysis strategy for the synthesis of spirocyclopentene oxindole derivatives has been developed (see scheme). The lower overall d.r. and ee obtained from the stepwise approach (4:1 vs. 8:1 d.r.; 71 vs. >99 % ee) suggest that both catalysts function more efficiently when combined, compared with the separate catalytic approach, and show an evident 1+1>2 synergistic effect for the construction of spirocyclopentene oxindoles.
机译:协同作用:已开发出一种高效的“有机金属”协同催化策略,用于合成螺环戊烯氧吲哚衍生物(请参阅方案)。较低的整体d.r.和通过逐步方法获得的ee(4:1 vs. 8:1 dr; 71 vs.> 99%ee)表明,与单独的催化方法相比,两种催化剂在组合时均能更有效地发挥作用,并且表现出明显的1 + 1螺环戊烯恶唑的构建具有> 2的协同作用。

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