“…Yield 0.52 g (62%); m.p. 297-300°C (decomposition); 1 2-[2-(4-methoxyphenyl)vinyl]-1,3-dimethyl-1H-3,1-benzimidazol -3-ium iodide BIm-OMe. A mixture of 1,2,3-trimethyl-1H-3,1-benzimidazol-3-ium iodide (0.58 g, 2 mmol), p-anisaldehyde (0.544 g, 4 mmol) and piperidine (0.1 g) was heated in pyridine (7 mL) at 130°C for 8 h. Then p-anisaldehyde (0.27 g, 2 mmol) was added, and the heating was continued for 6 h. After cooling the precipitate was filtered off, washed with hot water (10 mL), ethanol (5 mL), diethyl ether (2 Â 5 mL), dried and purified by recrystallization from DMSO (twice).…”