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Aromatic hydroxylation of anthracene derivatives by a chromium(iii)-superoxo complex via proton-coupled electron transfer

Title
Aromatic hydroxylation of anthracene derivatives by a chromium(iii)-superoxo complex via proton-coupled electron transfer
Authors
Devi, TaraliLee, Yong-MinNam, WonwooFukuzumi, Shunichi
Ewha Authors
남원우이용민Shunichi Fukuzumi
SCOPUS Author ID
남원우scopus; Shunichi Fukuzumiscopus
Issue Date
2019
Journal Title
CHEMICAL COMMUNICATIONS
ISSN
1359-7345JCR Link

1364-548XJCR Link
Citation
CHEMICAL COMMUNICATIONS vol. 55, no. 57, pp. 8286 - 8289
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS
Document Type
Article
Abstract
The chemistry of metal-superoxo intermediates started being unveiled in oxidation reactions by enzymes and their synthetic model compounds. However, aromatic hydroxylation reactions by the metal-superoxo species are yet to be demonstrated. In this study, we report for the first time that the hydroxylation of aromatic compounds such as anthracene and its derivatives by a mononuclear nonheme Cr(iii)-superoxo complex, [(Cl)(TMC)Cr-III(O-2)](+) (1), occurs in the presence of triflic acid (HOTf) via the rate-determining proton-coupled electron transfer (PCET) from anthracene to 1, followed by a fast further oxidation to give anthraquinone. The rate constants of electron transfer from anthracene derivatives to 1 in the presence of HOTf are well analyzed in light of the Marcus theory of electron transfer.
DOI
10.1039/c9cc03245b
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자연과학대학 > 화학·나노과학전공 > Journal papers
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