反应详情

To a mixture of ethyl [2-(7-ethoxy-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indol-2-yl)-4,5-dihydro-1,3-thiazol-5-yl]acetate (0.22 g), tetrahydrofuran (10 mL) and methanol (10 mL) was added a solution of potassium hydroxide (85%, 0.10 g) in water (5 mL). The mixture was stirred at room temperature for 15 h and then partitioned between ethyl acetate and aqueous citric acid solution. The organic layer was washed with brine, dried (MgSO4), filtered, and concentrated to give a light yellow amorphous solid, which was crystallized from ethyl acetate-hexane to give the title compound (186 mg, 90%) as light yellow crystals. MS 476 (MH+). mp 208-210° C.

1. custompartitioned between ethyl acetate and aqueous citric acid solution
2. washThe organic layer was washed with brine
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customto give a light yellow amorphous solid, which
7. customwas crystallized from ethyl acetate-hexane