| 摘要 |
1,173,983. Cycloheptimidazolium compounds. SANKYO CO. Ltd., and KONISHIROKU PHOTO INDUSTRY CO. Ltd. 17 March, 1967 [19 March, 1966], No. 12583/67. Heading C2C. [Also in Division G2] Compounds of the formula wherein R 1 is alkyl, aryl or aralkyl, R 2 is aryl or aralkyl, R 3 is hydrogen, halogen, alkyl or phenyl and X is halogen are prepared by reacting a compound of formula with a compound of formula X.COOR<SP>1</SP>, wherein R<SP>1</SP> is alkyl. Compounds wherein X is other than halogen, e.g. hydrogen sulphate or methyl sulphate are obtained by treating the halogenide with an appropriate acid. The substituents on the aryl and aralkyl groups may be chlorine, methyl, methoxy or nitro.
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