反应详情

A solution of lithium hydroxide monohydrate (7.00 g, 166.8 mmol) in water (100 mL) was added to a solution of 4-(azidomethyl)-2-chlorobenzoic acid, methyl ester (12.17 g, 53.9 mmol) in tetrahydrofuran (100 mL) and the resulting solution was stirred at room temperature overnight. The reaction mixture was concentrated to remove some of the tetrahydrofuran. The solution was extracted with ethyl acetate (200 mL) and the extract was discarded. Then 1 M HCl (100 mL) was added and the mixture was extracted with ethyl acetate (2×200 mL). The combined organic layers were dried (MgSO4), filtered, and evaporated to give 4-(azidomethyl)-2-chlorobenzoic acid (6.82 g, 60%) as a white solid, mp 87-88° C.

1. concentrationThe reaction mixture was concentrated
2. customto remove some of the tetrahydrofuran
3. extractionThe solution was extracted with ethyl acetate (200 mL)
4. additionThen 1 M HCl (100 mL) was added
5. extractionthe mixture was extracted with ethyl acetate (2×200 mL)
6. dry with materialThe combined organic layers were dried (MgSO4)
7. filtrationfiltered
8. customevaporated