反应详情

温度

100 °C

To a sealable flask containing ethyl 4-(((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-amino-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)methylene)cyclohexanecarboxylate (0.015 g, 0.026 mmol) was added phosphoric acid, potassium salt (0.028 g, 0.130 mmol), potassium iodide (0.013 g, 0.078 mmol) and 4-(2-chloroethyl)thiomorpholine 1,1-dioxide (0.015 g, 0.078 mmol). The mixture was diluted with acetonitrile (1 mL), flushed with nitrogen, sealed, and heated to 100° C. After heating the mixture for 22 h, it was cooled to rt, diluted with water (5 mL), and extracted with dichloromethane (3×5 mL). The organic layers were dried with sodium sulfate, filtered, and concentrated under reduced pressure. The crude product was used in the next step with no additional purification. LCMS: m/e: 737.7 (M+H)1, 2.22 min (method 1).

1. customflushed with nitrogen
2. customsealed
3. temperatureAfter heating the mixture for 22 h
4. temperatureit was cooled to rt
5. additiondiluted with water (5 mL)
6. extractionextracted with dichloromethane (3×5 mL)
7. dry with materialThe organic layers were dried with sodium sulfate
8. filtrationfiltered
9. concentrationconcentrated under reduced pressure
10. customThe crude product was used in the next step with no additional purification
11. custom737.7 (M+H)1, 2.22 min (method 1)