反应详情

To ethyl-(6bR,10aS)-2-oxo-2,3,6b,9,10,10a-hexahydro-1H-pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxaline-8(7H)-carboxylate (4.41 g, 14.6 mmol) was added 1M BH3 THF complex solution (36.6 mL). The reaction was heated under reflux for 5 hr. After the reaction cooled down to r.t, 6N HCl (40 mL) was added dropwise with chilling. The reaction solution was heated under reflux for 30 minutes. After cooled down to r.t., 1N NaOH was added to adjust the pH to 8. The reaction was extracted with CH2Cl2 (2×200 mL). The combined organic layers were washed with brine, dried over MgSO4, and concentrated to afford ethyl (6bR,10aS)-2,3,6b,9,10,10a-hexahydro-1H-pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxaline-8(7H)-carboxylate (4.10 g, 98%). The product was used in next step without further purification. MS-APcI: 288 [MH]+

1. temperatureThe reaction was heated
2. temperatureunder reflux for 5 hr
3. temperatureAfter the reaction cooled down
4. temperaturewith chilling
5. temperatureThe reaction solution was heated
6. temperatureunder reflux for 30 minutes
7. extractionThe reaction was extracted with CH2Cl2 (2×200 mL)
8. washThe combined organic layers were washed with brine
9. dry with materialdried over MgSO4
10. concentrationconcentrated