2-(1-ALKENYL)- AND 2-ARYL-SUBSTITUTED FOUR-MEMBERED CYCLIC NITRONES AS PRECURSORS FOR 2,3,4-SUBSTITUTED PYRIDINES AND QUINOLINES

Article abstract of DOI:10.1016/S0040-4020(01)80139-3

Reaction of the 2-(1-alkenyl)-substituted four-membered cyclic nitrones 3 with KOtBu gave the corresponding α,β-γ,δ-unsaturated oximes 6 which were converted into the substituted pyridines 9, either by azeotropic removal of water in refluxing benzene or b