3-(3-Chloro-propoxy)-benzoic acid ethyl ester → 3-[3-(3-Benzyl-2-imino-2,3-dihydro-benzoimidazol-1-yl)-propoxy]-benzoic acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-benzyl-1,3-dihydro-benzoimidazol-2-ylideneamine (247 mg, 1.10 mmol) in 2-butanone (40 ml) was added 3-(3-chloro-propoxy)-benzoic acid ethyl ester (0.40 g, 1.65 mmol) and KI (0.55 g, 3.32 mmol). The reaction was heated to 85° C. where it was maintained for 54 h. After this time, the mixture was cooled to rt and filtered. The filtrate was concentrated under reduced pressure and combined with the collected solid, washed with diethyl ether and petroleum ether and dried to provide 3-[3-(3-benzyl-2-imino-2,3-dihydro-benzoimidazol-1-yl)-propoxy]-benzoic acid ethyl ester (350 mg, 74%). HPLC-MS 430 [M+1]+.

Provenance & Evidence