反应详情

To a stirred solution of 6-ethoxy-2-(ethylamino)quinoline-3-carbaldehyde SLA 41034 (0.605 g, 2.48 mmol) in THF (50 mL) in a 250 mL round-bottomed flask equipped with a magnetic stirrer was added NaBH4 (0.094 g, 2.48 mmol) and the mixture was stirred overnight at RT then cooled in an ice bath before quenching by addition of a 1 N aq. HCl solution (40 mL). After stirring for 15 min at that temperature, the mixture was basified to pH=9 with a 2 N aq. NaOH solution. THF was then removed at 40° C. under vacuum and the solution was extracted with CH2Cl2 (200 mL), washed with brine (20 mL), dried over Na2SO4, filtered, and concentrated under vacuum to give (6-ethoxy-2-(ethylamino)quinolin-3-yl)methanol SLA 41040 as an orange solid (481 mg, 79% yield).

1. temperaturethen cooled in an ice bath
2. custombefore quenching by addition of a 1 N aq. HCl solution (40 mL)
3. stirringAfter stirring for 15 min at that temperature
4. customTHF was then removed at 40° C. under vacuum
5. extractionthe solution was extracted with CH2Cl2 (200 mL)
6. washwashed with brine (20 mL)
7. dry with materialdried over Na2SO4
8. filtrationfiltered
9. concentrationconcentrated under vacuum