Regioselective Insertion of Carborynes into Ethereal C−H Bond: Facile Synthesis of α-Carboranylated Ethers
datasetposted on 20.04.2011 by Sunewang R. Wang, Zaozao Qiu, Zuowei Xie
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Carborynes can exist in two resonance forms, bonding form vs biradical form. The biradical form can be readily generated via the elimination of LiI from 1-iodo-n-lithio-1,n-C2B10H10 (n = 2, 7) under UV irradiation. They can undergo α-C−H bond insertion with aliphatic ethers, affording α-carboranylated ethers in excellent regioselectivity at room temperature. This serves as a new methodology for the generation of a series of functionalized carboranes bearing alkoxy units.