[Iminium compounds against bacteria and fungi. 29. 3-Alkoxymethyl-1-ethyl-, 3-alkylthiomethyl-1-ethyl-, 3-alkoxymethyl-1-butyl-, and 3-alkylthiomethyl-1-butylbenzimidazolium chloride]. / Iminiumverbindungen gegen Bakterien und Pilze, 29. Mitt.: 3-Alkoxymethyl-1-ethyl-, 3-Alkylthiomethyl-1-ethyl-, 3-Alkoxymethyl-1-butyl- und 3-Alkylthiomethyl-1-butylbenzimidazolium-chloride.

Syntheses and antimicrobial activity of 3-alkoxymethyl-1-ethyl-, 3-alkylthiomethyl-1-ethyl-, 3-alkoxymethyl-1-butyl-, and 3-alkylthiomethyl-1-butylbenzimidazolium chlorides are described. The compounds were obtained by reaction of 1-ethyl- or 1-butylbenzimidazole with chloromethylalkyl ethers or chloromethylalkyl sulfide. Antibacterial properties were tested on 13 strains of bacteria and fungi. 3-Dodecylthio-methyl-1-ethyl-benzimidazolium chloride exhibited the highest antibacterial activity.