反应详情

A solution of 3-benzyloxy-6-methoxy-[1,5]naphthyridine-4-carboxylic acid amide (640 mg, 2.07 mmol, 1.0 eq) in tetrahydrofuran (50 mL) is added at room temperature to a flask charged with Schwartz's reagent (800 mg, 3.1 mmol, 1.5 eq) and the resulting mixture is stirred at room temperature for 10 minutes. Solvent is removed to give a crude that is purified by column chromatography (silica gel, eluent: petroleum ether:ethyl acetate, 1:1, v/v) to afford a mixture of aldehyde and alcohol. This mixture is dissolved in methanol (20 mL) and sodium borohydride (39 mg, 1.03 mmol, 0.5 eq) is added at room temperature. After 5 minutes stirring at room temperature, solvent is removed to give a crude that is purified by column chromatography (silica gel, eluent: petroleum ether:ethyl acetate, 4:1, v/v) to afford (3-benzyloxy-6-methoxy-[1,5]naphthyridin-4-yl)-methanol as a white solid (390 mg, 64% yield).

1. customSolvent is removed
2. customto give a crude that
3. customis purified by column chromatography (silica gel, eluent
4. custompetroleum ether:ethyl acetate, 1:1, v/v) to afford
5. stirringAfter 5 minutes stirring at room temperature
6. customsolvent is removed
7. customto give a crude that
8. customis purified by column chromatography (silica gel, eluent