The First Homolytic Substitution of Pyrylium Salts. C-4 Methylation of 2,6-Disubstituted Pyrylium Cations |
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| Authors: | Giancarlo Doddi Gianfranco Ercolani |
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| Affiliation: | Centro CNR di Studio sui Meccanismi di Reazione, e Dipartimento di Chimica , Università “La Sapienza” , P.le Aldo Moro 2, 00185, ROMA, Italy |
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| Abstract: | 2,6-Diphenylpyrylium and 2,6-di-t-butylpyrylium cations react with methyl radical generated by ButOOH-Fe+2 in acidic aqueous acetonitrile, to yield substitution exclusively at C-4 position. |
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