Bull. Russ. Acad. Sci. Div. Chem. Sci. (Engl. Transl.) p. 2091 - 2095 (1992)
Update date:2022-08-04
Topics:
Voinov, M. A.
Martin, V. V.
Volodarskii, L. B.
Cycloaddition of aldonitrones (derivatives of 3-imidazoline-3-oxide) to isothiocyanates depends on the N(1) substituent.Electron donating substituents facilitate cycloaddition to the C=N bond, whereas electron acceptors activate the C=S bond.Hyrolysis of adducts on the C=N bond followed by oxidation gives nitroxide radicals which are pH-sensitive spin probes. Keywords: aldonitrones, 3-imidazoline-3-oxide derivatives, isothiocyanates.
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