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