反应详情

To a solution of methyl 3-{4-[(4-formyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate (3.60 g) in tetrahydrofuran (100 mL)-ethanol (10 mL) was gradually added sodium borohydride (0.36 g) at room temperature. After stirring for 1 hr, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give methyl 3-{4-[(4-hydroxymethyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate as colorless crystals (3.60 g, yield 100%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 141-142° C.

1. customat room temperature
2. extractionthe mixture was extracted with ethyl acetate
3. washThe ethyl acetate layer was washed with saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. concentrationconcentrated