反应详情

To a solution of ethyl[7-(3-chlorophenyl)-1-oxo-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazin-4-yl]acetate (0.573 g, 1.72 mmol) in a mixture tetrahydrofuran-water (5:1, 10 mL) was added lithium hydroxide (144 mg, 3.44 mmol) and the reaction mixture was stirred at room temperature for 18 h. The THF was evaporated and the aqueous residue diluted with H2O. The aqueous phase was acidified with hydrochloric acid (1 M) until pH<1 and a precipitation occurred; the solid was filtered, washed with water and dried under vacuum to obtain the title compound as an off-white solid (450 mg, 85% yield).

1. customThe THF was evaporated
2. additionthe aqueous residue diluted with H2O
3. customa precipitation
4. filtrationthe solid was filtered
5. washwashed with water
6. customdried under vacuum