反应详情

To a solution of ethyl 2-(2-(methylsulfonyl)phenoxy)acetate (750 mg, 2.9 mmol) in EtOH (15 ml) was added 10% NaOH aqueous solution (15 mL) at 26° C. The mixture was stirred for 30 min and then concentrated and the residue diluted with water (20 mL) and washed with ethyl acetate (2×20 mL). The aqueous layer was then acidified with 2N HCL until pH 3 and then extracted with ethyl acetate (2×20 ml). The combined organic layers were washed with brine (30 mL), dried over Na2SO4 and concentrated to give the title compound which was used in next step without further purification.

1. concentrationconcentrated
2. additionthe residue diluted with water (20 mL)
3. washwashed with ethyl acetate (2×20 mL)
4. extractionextracted with ethyl acetate (2×20 ml)
5. washThe combined organic layers were washed with brine (30 mL)
6. dry with materialdried over Na2SO4
7. concentrationconcentrated