Acylhydrazones and anti-psychotic compositions thereof

A compound of the formula:

• ##STR11## wherein R.sup.1 is halogen, R.sup.2 is hydrogen, halogen or benzoylamino of which the benzoyl is optionally substituted with one or two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, lower alkanoyl, cyclopropylcarbonyl, cyclohexylcarbonyl, lower alkenoyl, phenyl(lower)alkanoyl, halo(lower)alkanoyl, amino(lower)alkanoyl, phenoxy(lower)-alkanoyl, lower alkylamino(lower)alkanoyl, lower alkoxy(lower)alkanoyl, or phenyl(lower)alkenoyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is benzoyl, lower alkanoyl, phenyl(lower)alkanoyl, cyclopropylcarbonyl, cyclohexylcarbonyl or phenoxy(lower)alkanoyl and Z is a group having the formula:
• ##STR12## wherein R.sup.5 is hydrogen, hydroxyl or benzoyloxy optionally substituted with one or two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, lower alkanoyl, cyclopropylcarbonyl, cyclohexylcarbonyl, lower alkenoyl, phenyl(lower)alkanoyl, halo(lower)alkanoyl, amino(lower)alkanoyl, phenoxy(lower)alkanoyl, lower alkylamino(lower)alkanoyl, lower alkoxy(lower)alkanoyl, or phenyl(lower)alkenoyl, and R.sup.6 is hydrogen, phenyl or benzyl, said phenyl or benzyl being optionally substituted with one or two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy and trifluoromethyl on the benzene ring;
• ##STR13## wherein the dotted line indicates the optional presence of an additional single bond linkage, R.sup.7 is hydrogen or lower alkyl and R.sup.8 and R.sup.9 are each hydrogen, halogen or lower alkyl;
• ##STR14## wherein R.sup.10 is hydrogen or lower alkyl and R.sup.11 is hydrogen, halogen, lower alkyl or lower alkoxy;
• or ##STR15## wherein R.sup.12 is hydrogen, halogen, lower alkyl, lower alkoxy or trifluoromethyl and n is an integer of from 0 to 2, or a pharmaceutically acceptable salt thereof.