Novel thermal and photochemical rearrangements of N-substituted 2-pyridones

Abstract

Examples of four novel rearrangements of 1-substituted 4,6-diphenyl-2-pyridones are reported: (a) 1-phenethoxy and 1-but-3-enoxy give 3-benzyl and 3-prop-2-enyl derivatives, respectively, with elimination of CH₂O; (b) 1-octyloxy gives 3-octyloxy; (c) 1-α-(p-tolylimino)benzyloxy gives 3- and 5-N-benzoyl-p-toluidino; (d) 1-p-toluoyloxy gives 3- and 5-p-toluoyloxy-derivatives.