3-PIPERAZINYLBENSAZOLDERIVAT.

摘要

The invention relates to a compound of the formula (III- a) and to a pharmaceutically acceptable acid addition salt or a stereochemical isomer thereof, where R is hydrogen or C1-6-alkyl; R1 and R2 independently denote hydrogen, halogen, hydroxyl, C1-6-alkyloxy or C1-6-alkyl; and R3-b is hydrogen, C1-6-alkyl or aryl-C1-6-alkyl. The compound can be used as an intermediate when preparing antipsychotic 3-piperazinylbenzazole derivatives. <IMAGE>