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A facile and highly chemoselective synthesis of doubly activated cyclopropanes is reported where mixtures of alkenes and β‐dicarbonyl‐derived iodonium ylides are irradiated with light from blue LEDs. This metal‐free synthesis gives cyclopropanes in yields up to 96 %, is operative with cyclic and acyclic ylides, and proceeds with a variety of electronically‐diverse alkenes. Computational analysis explains...
Die Bildung doppelt aktivierter Cyclopropane durch Bestrahlung von Alkenen und β‐Dicarbonyl‐Iodonium‐Yliden mit blauem LED‐Licht wird von S. Quideau, W. S. Hopkins, G. K. Murphy et al. im Forschungsartikel auf S. 17115 beschrieben. Diese metallfreie Cyclopropansynthese aus cyclischen und acyclischen Yliden und elektronisch diversen Alkenen liefert Ausbeuten bis 96 %. Rechnungen bevorzugen einen Mechanismus...
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