A compound of formula, characterized in that X denotes Cl or Br, R 1 denotes allyl-, NC-C 3 - 4 -alkylene-, H-(O-CH 2 -CH 2) q -, CH 3 -(O-CH 2 -CH 2) m -, tetrahydropyranyl-(CH 2) r -, N-[R 11 -(O-CH 2 CH 2) s CH 2 C]-piperidin-4-yl-(CH 2) r - or R 9 R 10 N-C -(2-oxo-2H-pyrid-1-yl)-C 3 - 5 -alkylene-, R 2 denotes C 1 - 3 -alkyl-, R 3 and R 4 denote independently H, halogen, HO-, (HO-C 2-3 -alkylene) 2 N-, (R 7 O-)(R 8 O-)P -(CH 2) n -O-, R 5 R 6 N-C -CH 2 -O-, HO-(CH 2) 2 -O-, (CH 3) 2 P -CH 2 O- or a substituent of formula (bg) and if R 3 denotes H or halogen, then R 4 does not denote H or halogen, and if R 4 denotes H or halogen, then R 3 does not denote H or halogen, R 5 and R 6 denote independently H or C 1 - 2 -alkyl-, or R 5 and R 6 together with the nitrogen atom they are attached to form a 6-membered heterocycle from the group consisting of thiomorpholine, thiomorpholine-S-oxide, thiomorpholinedioxide, R 7 and R 8 denote independently H or C 1-3 -alkyl-, R 9 and R 10 denote independently H or C 1-3 -alkyl-, R 11 denotes H or C 1-3 -alkyl-, m denotes 2, 3 or 4, n denotes 2 or 3, q denotes 3 or 4, r denotes 0, 1, 2 or 3, s denotes 0, 1 or 2, Z - denotes a physiologically acceptable anion selected from the group consisting of chloride, bromide, iodide, hydroxide, hydrogensulfate, sulfate, nitrate, phosphate, formiate, acetate, trifluoroacetate, fumarate, citrate, tartrate, oxalate, succinate, mandelate, methanesulfonate and p-toluenesulfonate, z denotes 0 for negatively charged substituents R 1 -R 4, 1 for uncharged substituents R 1 -R 4 or 2 for positively charged substituents R 1 -R 4, and tautomers and optionally the pharmacologically acceptable acid addition salts thereof. X denotes Cl or Br, R 1 denotes allyl-, NC-C 3 - 4 -alkylene-, H-(O-CH 2 -CH 2) q -, CH 3 -(O-CH 2 -CH 2) m -, tetrahydropyranyl-(CH 2) r -, N-[R 11 -(O-CH 2 CH 2) s CH 2 C]-piperidin-4-yl-(CH 2) r - or R 9 R 10 N-C -(2-oxo-2H-pyrid-1-yl)-C 3 - 5 -alkylene-, R 2 denotes C 1 - 3 -alkyl-, R 3 and R 4 denote independently H, halogen, HO-, (HO-C 2-3 -alkylene) 2 N-, (R 7 O-)(R 8 O-)P -(CH 2) n -O-, R 5 R 6 N-C -CH 2 -O-, HO-(CH 2) 2 -O-, (CH 3) 2 P -CH 2 O- or a substituent of formula (bg) and if R 3 denotes H or halogen, then R 4 does not denote H or halogen, and if R 4 denotes H or halogen, then R 3 does not denote H or halogen, R 5 and R 6 denote independently H or C 1 - 2 -alkyl-, or R 5 and R 6 together with the nitrogen atom they are attached to form a 6-membered heterocycle from the group consisting of thiomorpholine, thiomorpholine-S-oxide, thiomorpholinedioxide, R 7 and R 8 denote independently H or C 1-3 -alkyl-, R 9 and R 10 denote independently H or C 1-3 -alkyl-, R 11 denotes H or C 1-3 -alkyl-, m denotes 2, 3 or 4, n denotes 2 or 3, q denotes 3 or 4, r denotes 0, 1, 2 or 3, s denotes 0, 1 or 2, Z - denotes a physiologically acceptable anion selected from the group consisting of chloride, bromide, iodide, hydroxide, hydrogensulfate, sulfate, nitrate, phosphate, formiate, acetate, trifluoroacetate, fumarate, citrate, tartrate, oxalate, succinate, mandelate, methanesulfonate and p-toluenesulfonate, z denotes 0 for negatively charged substituents R 1 -R 4, 1 for uncharged substituents R 1 -R 4 or 2 for positively charged substituents R 1 -R 4,