反应详情

温度

50 °C

A solution of N-(cyclopentylmethyl)-N-ethyl-6-methoxy-2-[(methoxymethoxy)methyl]pyridin-3-amine (8.39 g, 27.2 mmol) in a mixture of dioxane (400 mL) and water (100 mL) was added dropwise with concentrated hydrochloric acid (20 mL), and the mixture was stirred at 50° C. for 19 hours. The reaction mixture was made basic by adding aqueous sodium hydroxide, and extracted with ethyl acetate. The organic layers were combined, washed with water and saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=15:1) to obtain {3-[(cyclopentylmethyl)(ethyl)amino]-6-methoxypyridin-2-yl}methanol (6.72 g, 94%) as pale yellow oil.

1. extractionextracted with ethyl acetate
2. washwashed with water and saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=15:1)