反应详情

A 25-mL, single-necked, round-bottomed flask equipped with a magnetic stirring bar was charged with 125b (50 mg, 0.090 mmol), LiOH.H2O (20 mg, 0.83 mmol), THF (2 mL), isopropanol (2 mL), and water (2 mL). After the reaction mixture was stirred at room temperature for 3 h, it was partitioned between dichloromethane (5 mL) and water (5 mL), and the organic phase was extracted with dichloromethane (5 mL×3). The combined organic phases were washed with water (5 mL×2) and brine (5 mL×1), dried (Na2SO4), and concentrated. The crude product was re-dissolved in dichloromethane (3 mL). To this solution was added hexane (10 mL) and the resulting precipitates were filtered to give 50% yield (23 mg) of 2-(3-(5-(5-ethyl-1H-pyrazol-3-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(hydroxymethyl)phenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one 125 MS (ESI+) m/z 513.3 (M+H).

1. customA 25-mL, single-necked, round-bottomed flask equipped with a magnetic stirring bar
2. customit was partitioned between dichloromethane (5 mL) and water (5 mL)
3. extractionthe organic phase was extracted with dichloromethane (5 mL×3)
4. washThe combined organic phases were washed with water (5 mL×2) and brine (5 mL×1)
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated
7. dissolutionThe crude product was re-dissolved in dichloromethane (3 mL)
8. additionTo this solution was added hexane (10 mL)
9. customthe resulting precipitates
10. filtrationwere filtered