Synthesis and some properties of n,s-divinyl-2-mercaptobenzimidazole

N,S-Divinyl-2-mercapto benzimidazole was obtained by reaction of 2-mercaptodimidazole with acetylene under pressure in the presence of heavy metal salts. N-Vinyl-S-ethyl-2-mercaptobenzimidazole was synthesized by hydrogenization of the product on a nickel catalyst. A high-melting polymer is obtained from N,S-divinyl-2-mercaptobenzimidazole under free-radical conditions.