Patent ID: 7064216

Claim:
A compound of the formula (I) in which R 1 represents methyl, ethyl, n-propyl, isopropyl, hydroxyl, methylsulfonyl, ethylsulfonyl, phenylsulfonyl, p-methylphenylsulfonyl, or benzyl that is optionally substituted by halogen, nitro, C 1 -C 4 -alkyl, trifluoromethyl, or C 1 -C 4 -alkoxy, R 2 and R 3 together represent —(CH 2 ) n — that is optionally substituted by halogen, NO 2 , carboxyl, carbonyl, C 1 -C 4 -alkyl, C 1 -C 4 -halogenoalkyl, C 1 -C 4 -alkoxy, or C 1 -C 4 -halogenoalkoxy or the optionally halogen-, NO 2 —, C 1 -C 4 -alkyl-, C 1 -C 4 -halogenoalkyl-, C 1 -C 4 -alkoxy-, or C 1 -C 4 -halogenoalkoxy-substituted groups having the formulas where the arrows mark the points of linkage to the thiazole ring, and n represents 3, 4 or 5, R 4 represents bromine or chlorine, and X − represents chloride, bromide, iodide, hydrogen sulfate, ½ equivalent of sulfate, sulfate, hexachloroantimonate, methanesulfonate, trifluoromethanesulfonate, p-toluenesulfonate, tetrafluoroborate, tetraphenylborate, or hexafluorophosphate.