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ChemInform Abstract: Electrooxidative Cyclization of 4-Dithioazetidones (Kamiya′s Disulfides). A Facile Access to 2-(Substituted Methyl)penicillanates.
First published: May 30, 1989
Abstract
The (benzothiazolyldithio)azetidinones (I) are subjected to electrolysis in the presence of potassium thio- or selenocyanate (II) and acids in two-phase systems, producing selectively the penicillanates (III).
ChemInform Abstract
The (benzothiazolyldithio)azetidinones (I) are subjected to electrolysis in the presence of potassium thio- or selenocyanate (II) and acids in two-phase systems, producing selectively the penicillanates (III). The analogous electrochemical ring closure reaction with sodium azide results in the formation of moderate amounts of diastereomeric azides.
