Abstract
N-Alkylation of (E)-2-[2-(4-pyridyl)vinyl]-1H-benzimidazole (10), obtained by two different approaches, affords the title salts 4-6, deprotonation of which results in the new (E)-1-alkyl-4-[2-(benzimidazolyl-2-idene)ethylidene]-1, 4-dihydropyridines (7 and 8) with a betaine character. Their biological properties have also been examined.
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