Certain N-substituted hydrazones have exhibited spasmolytic, hypotensive, and antitumor activity. Their use for treatment of schizophrenia, leprosy, and other diseases is being studied [1]. Over the past few years much attention has been given to 1,1-dimethyl- hydrazones, ie derivatives of 1,1-dimethylhydrazine, a component of rocket fuels [234]. In particular, certain 1,1-dimethylhydrazones serve as key starting materials in the synthesis of azapeptides [5, 6], anti- biotics, such as ...