SNAr displacement of fluorine from pentafluoropyridin by sodium oximates: unprecedented substitution patterns
Abstract
Displacement of fluorine from pentafluoropyridine under conditions by sodium oximates RR′CNO–Na+[R,R′= Me or Ph; R = Me, R′= Ph (anti isomer)] suspended in benzene or diethyl ether yields O-tetrafluoropyridyl oximes arising from monosubstitution at both 2- and 4-positions.