反应详情

2-[(5-Methyl-furan-2-ylmethyl)-amino]-quinoline-5-carbaldehyde (example 21, step A+B, 150 mg, 0.564 mmol) was dissolved in 5 mL ethylendichloride and acetic acid (136 mg, 2.27 mmol) was added. The reaction mixture was stirred at room temperature for 1 h. Sodium triacetoxy borohydride (258 mg, 1.22 mmol) was added and stirring was continued overnight. The reaction mixture was quenched by addition of 50 mL water. The mixture was extracted three times with dichloromethane (50 mL each). The organic phases ware pooled, dried with sodium sulfate, filtered and evaporated. The residue was purified by flash chromatography on silica gel (cyclohexane/ethyl acetate 100:0->50:50 gradient). {2-[(5-Methyl-furan-2-ylmethyl)-amino]-quinolin-5-yl}-methanol was obtained as a light brown solid (105 mg, 69%), MS: m/e=269.5 (M+H+).

1. stirringstirring
2. waitwas continued overnight
3. customThe reaction mixture was quenched by addition of 50 mL water
4. extractionThe mixture was extracted three times with dichloromethane (50 mL each)
5. dry with materialdried with sodium sulfate
6. filtrationfiltered
7. customevaporated
8. customThe residue was purified by flash chromatography on silica gel (cyclohexane/ethyl acetate 100:0->50:50 gradient)