Carbon‐13 NMR studies on azolopyridines 2—The oxazolopyridine systems

The 13C NMR spectra of oxazolopyridine systems are discussed, and a simple method for distinguishing between 2-methyloxazolo- and 3-methylisoxazolo-pyridines is suggested, based on the chemical shift of the methyl group. The effect of the 2-methyloxazole fusion on the pyridine ring is comparable to that of 3-methylisoxazole, judging by 1J(CH) values determined from line splittings.