Novel heteroarenylpiperazines, intermediates and processes for the preparation thereof, and methods for treating psychoses utilizing compounds or compositions thereof are disclosed.

This invention relates to compounds of the formula ##STR1## wherein X is halogen, hydroxy, (C.sub.1 -C.sub.6)alkoxy, amino or trifluoromethyl; and Y is --CN or --NR.sup.1 R.sup.2 ; where l is an integer of 0, 1 or 2; m is an integer of 0, 1 or 2; n is an integer of 2, 3 or 4, except when Y is CN, in which case n can also be 1; R.sup.1 is hydrogen, (C.sub.1 -C.sub.6)alkyl or (C.sub.1 -C.sub.6)alkylcarbonyl; R.sup.2 is hydrogen, (C.sub.1 -C.sub.10)alkylcarbonyl, (C.sub.3 -C.sub.12)cycloalkylcarbonyl, hydroxy-(C.sub.1 -C.sub.6)alkylcarbonyl, phenylcarbonyl, thienylcarbonyl or benzothienylcarbonyl; or R.sub.1 and R.sup.2 together with nitrogen atom to which they are attached form the ring ##STR2## where A is C.dbd.O or CH.sub.2 ;and B is C.dbd.O, CHOH, CH.sub.2 or CH.sub.2 CH.sub.2 ; and Z is halogen, hydroxy, (C.sub.1 -C.sub.6)alkoxy, amino or trifluoromethyl p is 0 or 1; and pharmaceutically acceptable acid addition salts thereof, pharmaceutical compositions thereof and their use for the treatment of psychoses.

Bicyclic sulfones of the formula I ##STR1## in which Y is a halogen atom, Z is a halogen atom or hydrogen, m and n, that are different and represent an integer 0 or 1, A and B each represent hydrogen or together represent a valency bond, X.sub.1 and X.sub.2 each represent NR.sub.1 R.sub.2 or, if A and B represent a valency bond, one of the two residues X.sub.1 or X.sub.2 represents hydrogen and the other represents NR.sub.1 R.sub.2, R.sub.1 denotes a C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl or a benzyl residue substituted if desired, by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or hydroxy and R.sub.2 denotes hydrogen or a residue from the definition of R.sub.1 or R.sub.1 and R.sub.2 together with the nitrogen atom form a heterocyclic ring which if desired, contains further heteroatoms and/or can be substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkanoyl or benzhydryl, their tautomers, enantiomers, diastereomers and physiologically tolerated salts, processes for their production and pharmaceutical agents which contain these compounds for the treatment of allergic diseases as well as bronchospastic and bronchoconstrictory reactions caused by inflammation.