Acylhydrazone compounds having excellent psychotropic activities are described, which are represented by the formula: wherein R1 is a halogen atom, R4 is benzoyl, lower alkanoyl, phenyl (lower) alkanoyl, cycloalkylcarbonyl or phenoxy(lower) alkanoyl and Z represents various organic groups including piperidines, piperazines, etc. Processes for their production are also described.
ACYLHYDRAZONE COMPOUNDS