Selective cross-dehydrogenative C–O coupling of N-hydroxy compounds with pyrazolones. Introduction of the diacetyliminoxyl radical into the practice of organic synthesis

Abstract

Oxidative C–O coupling of oximes, <italic>N</italic>-hydroxyphthalimide, and <italic>N</italic>-hydroxybenzotriazole with pyrazolones <italic>via</italic> formation of <italic>N</italic>-oxyl radicals is described.