反应详情

Sodium tetrahydroborate (840 mg) was added to a solution of ethyl 4-(trifluoromethyl)-1,3-thiazole-2-carboxylate (2.5 g) in methanol (15 ml) at 0° C., and the mixture was stirred at the same temperature for 2 hr. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with water and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (NH, hexane/ethyl acetate) to give the title compound (1.7 g).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. additionthe residue was diluted with water
3. extractionextracted with ethyl acetate
4. washThe organic layer was washed with saturated brine
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe obtained residue was purified by silica gel column chromatography (NH, hexane/ethyl acetate)