1-Isopropylidene-2, 2-diacylhydrazines were prepared and their hydrolysis was examined. It was found that one of the acyl groups on N2 underwent rearrangement at the time of liberation of acetone to form 1, 2-diacylhydrazine but such rearrangement was not detected in 1-isopropylidene-2-benzoyl-2-phenylhydrazine.
