Abstract: Disclosed are compounds of the formula: or the pharmaceutically acceptable acid addition salts thereof wherein: R1 and R2 are the same or different and represent hydrogen, C1-C6 alkyl, halogen, hydroxy, amino, cyano, nitro, trifluoromethyl, trifluoromethoxy, C1-C6 alkoxy, —O2CR′, —NHCOR′, —COR′, —SOmR′, where R′ is C1-C6 alkyl and wherein m is 0, 1 or 2; or R1 and R2 independently represent —CONR′R″, or —NR′R″ where R′ and R″ independently represent hydrogen or C1-C6 alkyl; R3 is hydrogen, C1-C6 alkyl, or —COR′″ where R′″ is C1-C6 alkyl; R4 is hydrogen or C1-C6 alkyl; and R represents an azacycloalkylalkyl group, which compounds are useful in the treatment of affective disorders such as schizophrenia, depression, Alzheimer's disease, movement disorders such as Parkinsonism and dysronia, and other disorders which respond to dopaminergi