| abstract |
A process for preparing a compound as claimed in claim 1, characterized in that an excess of a base is added to an intermediate of formula (II) in the presence of an intermediate of formula (III), wherein W is chlorine or bromine or other leaving group, in a suitable solvent, with the variables as defined in claim 1; or, if desired, the compounds of formula (I) are converted into one another using transformations known in the art and furthermore, if desired, the compounds of formula (I) are converted into a pharmaceutically acceptable acid addition salt by treatment with an acid, or in a pharmaceutically acceptable base addition salt by treatment with a base or, conversely, the acid addition salt is converted to the free base by base treatment, or the salt of Base addition is converted to free acid by treatment with acid; and, if desired, their stereochemically isomeric forms or their N-oxide type forms are prepared. |