T. Kalai et al., SYNTHESIS OF 2-(2-THIENYL)BENZIMIDAZOLES BY THE REACTION OF 2-(MERCAPTOMETHYL)BENZIMIDAZOLE WITH BETA-ELECTROPHILIC ESTERS, Synthetic communications, 27(12), 1997, pp. 2041-2050
New 2-(2-di- and tetrahydrothienyl)benzimidazole compounds were prepar
ed by the ring closure reactions of 2-(mercaptomethyl)benzimidazole(1,
2) (1) and alpha,beta-unsaturated compounds activated with electron-wi
thdrawing groups.