Treatment of the oxime derivatives 1a–c with sodium methoxide in anhydrous methanol afforded oximate sodium salt intermediates which were converted into N-aryl-{[((E)-4-arylbut-3-en-2-ylidene)amino]oxy}acetamides 13–15a,b,c upon reacting with compounds 12a–c in dry DMF. The structures of the isolated products 13–15a,b,c were established on the basis of their elemental and spectral analyses.