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Paper | Regular issue | Vol 27, No. 5, 1988, pp.1233-1240
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4493
Synthetic Uses of 1-[(Methythio)thiocarbonylmethyl]pyridinium Iodide. Synthesis of New Benzimidazole Derivatives

Ana M. Cuadro, Julio Alvarez-Builla,* and Juan J. Vaquero

*Departamento de Química Orgánica, Universidad de Alcalá de Henares, 28871 Alcalá de Henares (Madrid), Spain

Abstract

Reaction of 1-[(methylthlo)thiocarbonylmethyl]pyridinium iodide with substituted o-phenylenediamines gave 1-[(2’-benzimidazolyl)methyl]pyridinium salts which were acylated and mono- and dialkylated by standard procedures. In addition. 2-(1’-piperidinylmethyl)benzimidazole derivatives were prepared by reduction of pyridinium moiety with sodium dithionite.