| 摘要 |
Compounds of the general formula (I), <IMAGE> (in which R1 represents a hydrogen atom, a halogen atom, a nitro radical or a trifluoromethyl radical, R2 represents a hydrogen atom or a halogen atom and R3 and R4, together with the nitrogen atom to which they are attached, represent a 4-alkyl- piperazin-1-yl, 4-cycloalkyl-alkyl- piperazin-1-yl, 4-phenyl-piperazin-1-yl or piperidino radical) as well as their addition salts with mineral or organic acids, are prepared by reacting a compound of formula (II), <IMAGE> with an amine of formula III, <IMAGE> (in which alk and alk' represent alkyl radicals containing from 1 to 3 carbon atoms) in the presence of an organic solvent followed, if desired by salt formation. |
