反应详情

A 100 mL flask containing 2-(2-trifluoromethyl-benzoylamino)-indan-2-carboxylic acid ethyl ester (324, 0.57 g, 1.5 μmol) is charged with 1,4-dioxane (9 mL) and MeOH (9 mL). A stirring bar is added and stirring is initiated. After dissolution, water (4.5 mL) is added followed by the LiOH monohydrate (160 mg, 3.81 mmol). After 110 h, tlc analysis (silica, 10% MeOH/DCM) indicates that the starting material is completely consumed. The pH of the reaction mixture is carefully adjusted to pH 2 by slowly adding dilute aqueous HCl (3%, ˜9 mL). The contents of the flask are poured into a separatory funnel which contains EtOAc (40 mL). The layers are separated. The aqueous layer is extracted with EtOAc (20 mL). The combined organic phases are washed with water (20 mL) and brine (20 mL), and then dried over MgSO4, filtered and concentrated by pumping to constant weight yields off white solid (0.51 g, 97%).

1. additionA stirring bar is added
2. additionis added
3. customis completely consumed
4. additionby slowly adding dilute aqueous HCl (3%, ˜9 mL)
5. additionThe contents of the flask are poured into a separatory funnel which
6. customThe layers are separated
7. extractionThe aqueous layer is extracted with EtOAc (20 mL)
8. washThe combined organic phases are washed with water (20 mL) and brine (20 mL)
9. dry with materialdried over MgSO4
10. filtrationfiltered
11. concentrationconcentrated