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Various dialdehydes (1 -5) were formed by addition of dithiols to acrolein. Reaction of these dialdehydes with N-alkylhydroxylamines afforded dinitrones the two nitrone groups of which were joined by an alkylidene chain containing two sulfur atoms (6a,b-10a,b). Cycloaddition of these dinitrones with dimethyl acetylenedicarboxylate proceeded in the usual way giving bis(4-isoxazolines) (11a-15a). However, analogous dinitrones formed by reaction of the dialdehydes with N-(4-tert-butylphenyl)doi:10.1515/znb-1994-0719 fatcat:j7kjtva5t5gvhhyrwck7jjgzey