反应详情

A solution of diethyl [1-{(2-chlorophenyl)methyl}-2-propylthio-1H-imidazol-5-yl]methylmalonate (0.62 g, 1.41 mmol), sodium carbonate (1.5 g, 14.2 mol), ethanol (10 mL) and water (10 mL) was stirred at 25° C. for 18 hours, then heated for 15 minutes on a steam bath. The mixture was cooled, neutralized with aqueous hydrochloric acid solution, and the product was extracted into methylene chloride, washed with water, dried and concentrated to 0.425 g of product. Crystallization from ethyl acetate/hexane provided 0.23 g (55%) of 2-carbethoxy-3-[1-{(2-chlorophenyl)methyl}-2-propylthio-1H-imidazol-5-yl]propanoic acid; mp 118°-120° C.

1. temperatureheated for 15 minutes on a steam bath
2. temperatureThe mixture was cooled
3. extractionthe product was extracted into methylene chloride
4. washwashed with water
5. customdried
6. concentrationconcentrated to 0.425 g of product
7. customCrystallization from ethyl acetate/hexane