Electrochemistry and catalytic properties of amphiphilic Vitamin B12 derivatives in nonaqueous media

M. Giedyk, H. Shimakoshi, K. Goliszewska, D. Gryko, Y. Hisaeda

    研究成果: Contribution to journalArticle査読

    20 被引用数 (Scopus)

    抄録

    The reduction pathway of cobalester (CN)Cble, an amphiphilic vitamin Bf12 derivative, was investigated in organic solvents under electrochemical conditions and compared with mono- and dicyanocobyrinates. The redox characteristics were determined using cyclic voltammetry and spectroelectrochemical methods. The presence of a nucleotide moiety in B12-derivative impedes the in situ formation of dicyano-species thus facilitating the (CN)Co(iii) to Co(i) reduction. The (CN)Cble shows stepwise reduction to Co(i) via (CN)Co(ii). The reduction of (CN)Co(ii)/Co(i) was found to depend on cyanide-solvent exchange equilibrium with weakly coordinating solvents and bulky peripheral chains promoting intact (CN)Co(ii) species existence. The studied complexes were also utilized as catalysts in bulk electrolysis of benzyl bromide affording bibenzyl in very good yield. The Royal Society of Chemistry.

    本文言語英語
    ページ(範囲)8340-8346
    ページ数7
    ジャーナルDalton Transactions
    45
    20
    DOI
    出版ステータス出版済み - 2016

    All Science Journal Classification (ASJC) codes

    • 無機化学

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