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Dr. Shikuo Ren, Dr. Zaozao Qiu and Prof. Dr. Zuowei Xie Three-Component [2+2+2] Cycloaddition of Carboryne, Unactivated Alkene, and Alkyne via Zirconacyclopentane Mediated by Nickel: One-Pot Synthesis of Dihydrobenzocarboranes Angewandte Chemie International Edition 51

Version of Record online: 8 DEC 2011 | DOI: 10.1002/anie.201106212

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Mix three—get one: The complexation of a transition-metal center to an olefin or alkyne can significantly modify its reactivity, which makes the selective coupling of different alkenes or alkynes to carboryne possible. An example of a three-component [2+2+2] cycloaddition reaction of carboryne with unactivated alkene (see scheme, blue) and alkyne (red) mediated by zirconium and nickel complexes is described.

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