Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 5, Issue 19, Pages 3213-3217Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b710685h
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The oxidation of 2,2'-selenobis(benzamide) with N-chlorosuccinimide or hydrogen peroxide afforded the corresponding stable azaselenonium chloride and hydroxide, respectively. Both structures were characterized by spectroscopic and X-ray crystallographic methods. Each contains a covalent N-Se bond, as well as a noncovalent interaction between the selenium atom and the carbonyl oxygen atom of the other amide moiety. The treatment of the azaselenonium chloride with an excess of potassium hydride in DMSO-d(6) afforded the corresponding spirodiazaselenurane species, which proved hydrolytically unstable, but was characterized by NMR spectroscopy. The azaselenonium chloride displayed significant glutathione peroxidase-like catalytic activity in an assay with benzyl thiol and either hydrogen peroxide or tert-butyl hydroperoxide.
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