Disclosed are compounds of the formula: or the pharmaceutically acceptable addition salts thereof wherein: RSUB1 /SUBis halogen or CSUB1/SUB-CSUB4 /SUBalkyl; and RSUB2 /SUBand RSUB3 /SUBare the same or different and represent hydrogen, halogen, CSUB1/SUB-CSUB4 /SUBalkyl, CSUB1/SUB-CSUB4 /SUBalkoxy, alkylthio, hydroxy, amino, mono(CSUB1/SUB-CSUB4/SUB)alkylamino, di(CSUB1/SUB-CSUB4/SUB)alkylamino, or RSUB2 /SUBand RSUB3 /SUBtogether represent a 4 carbon alkenylene moiety that together with the phenyl ring to which they are attached form a naphthyl moiety, which compounds are useful in the treatment of neuropsycological diseases such as schizophrenia, psychotic depression and mania.
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