Ultrasonic irradiation of α,β-unsaturated carbonyl compounds 1a–i with acetonitrile in the presence of potassium t-butoxide gave 3-cyano-2-methylpyridines 2a–i in moderate to good yields. The pyridines are produced by a Michael reaction of 3-iminobutanonitrile, an acetonitrile dimer, to the substrates 1a–i.