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Heterocyclic and Open-Chain Carboranes via Transition-Metal-Free C–H Functionalization of Mono- and Diazine‑N‑oxides

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journal contribution
posted on 09.11.2015, 00:00 by Lidiia A. Galliamova, Mikhail V. Varaksin, Oleg N. Chupakhin, Pavel A. Slepukhin, Valery N. Charushin
For the first time, the direct C­(sp2)–H functionalization methodology has successfully been applied to cause nucleophilic modification of mono- and diazine-N-oxides with the 1,2-closo-carborane moiety. As a result of these cross-coupling reactions uncatalyzed by transition metals, a series of novel C-modified heterocyclic and open-chain (vinyl acetylene) carboranes have been obtained. Complexes of phenanthrolinyl-substituted o-carborane with Cu­(II) of various architectures have been synthesized.