A series of substituted N-methylisonicotinamidine (2a–f), N-methylpyrazine-2-carboxamidine (2g–i) derivatives were synthesized by reaction of amidine derivatives (1a–i) with methyl iodide in presence of triethylamine. Five-membered condensed dihydroimidazolylbenzenesulfonamide derivatives (3a–i) were obtained by the reaction of amidine derivatives (1a–i) with acylating agent oxalyl chloride. All the...
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