The 13C NMR spectra of all azabenzenoid izoxazolopyridines and some of their chloro derivatives are discussed.All 13C resonances were unambiguously assigned by means of gated decoupled spectra, from which one-bond and long range 13C-1H coupling constants have been determined from line splittings.
AZABENZOXAZOLES: SYNTHESIS OF 3-METHYLISOXAZOLO- AND 2-METHYLOXAZOLOPYRIDINES
A convenient synthesis of 4-acetyl-3-hydroxypyridine is reported; this compound allows the preparation of the new isoxazolo- and oxazolopyridine ring systems.