反应详情

135 mg 2-{[1-(1-Benzothiazol-2-yl-ethoxy)-naphthalene-2-carbonyl]-amino}-2-methyl-propionic acid methyl ester in 1 ml methanol and 1.5 ml 1 M aqueous sodium hydroxide solution were heated to 100° C. for 2 min in a microwave reactor. The reaction mixture was then acidified using 2 M hydrochloric acid and extracted with ethyl acetate twice. The combined organic layers were dried over magnesium sulphate, filtrated and concentrated in vacuo. Precipitation with pentane yielded 44 mg of 2-{[1-(1-Benzothiazol-2-yl-ethoxy)-naphthalene-2-carbonyl]-amino}-2-methyl-propionic acid as a colorless solid.

1. extractionextracted with ethyl acetate twice
2. dry with materialThe combined organic layers were dried over magnesium sulphate
3. filtrationfiltrated
4. concentrationconcentrated in vacuo
5. customPrecipitation with pentane