反应详情

A 1M solution of sodium hydroxide (5 mL; 5 mmol) was added to the solution of ethyl 5-(ethoxymethyl)-4,5-dihydroisoxazole-3-carboxylate (0.135 g, 0.67 mmol) in ethanol (1 mL). The reaction mixture was stirred at room temperature overnight. The solution was acidified to pH 0-1 by addition of 6N hydrochloric acid and was extracted with ethyl acetate. Combined ethyl acetate extracts were dried over magnesium sulfate and evaporated to provide 0.109 g (94%) of 5-(ethoxymethyl)-4,5-dihydroisoxazole-3-carboxylic acid as a white solid, which was directly used in the next step.

1. extractionwas extracted with ethyl acetate
2. dry with materialCombined ethyl acetate extracts were dried over magnesium sulfate
3. customevaporated