反应详情

To a solution of methyl 4-(3-chloropropoxy)benzoate ax13 (3 g, 13 mmol, 1 eq) in ethanol (30 ml) is added 2.5 M aqueous sodium hydroxide (10 ml, 25 mmol, 2 eq). The mixture is refluxed for 1 hour, concentrated under vacuum, acidified with 2 M aqueous hydrochloric acid to pH 1 and extracted with ethyl acetate (3×50 ml). The combined organic layers are evaporated to give 2.75 g of 4-(3-chloropropoxy)benzoic acid ax51.

1. temperatureThe mixture is refluxed for 1 hour
2. concentrationconcentrated under vacuum
3. extractionextracted with ethyl acetate (3×50 ml)
4. customThe combined organic layers are evaporated