反应详情

mCPBA (2.0 g of 60%, 6.97 mmol) was added to a solution of 7-benzyloxy-2-ethyl-1-(tetrahydro-2H-pyran-4-ylmethyl)-1H-imidazo[4,5-c]quinoline (2.8 g, 6.97 mmol) in chloroform (50 mL). After 30 minutes an additional equivalent of mCPBA was added and the reaction mixture was stirred for an additional hour. Ammonium hydroxide (20 mL) was added and the reaction mixture was stirred for 10 minutes. p-Toluenesulfonyl chloride (1.33 g, 6.97 mmol) was added in a single portion and the reaction mixture was stirred for 16 hours. The layers were separated and the aqueous layer was extracted with dichloromethane (2×100 mL). The organics were combined, washed with water and brine, dried over sodium sulfate, filtered, and then concentrated under reduced pressure. The residue was purified by chromatography on a HORIZON HPFC system (40+M cartridge eluting with a gradient of 2 to 25% CMA in chloroform). The residue was combined with acetonitrile and allowed to stand overnight. A solid was isolated by filtration and rinsed with acetonitrile to provide 1.96 g of 7-benzyloxy-2-ethyl-1-(tetrahydro-2H-pyran-4-ylmethyl)-1H-imidazo[4,5-c]quinolin-4-amine as a tan solid.

1. stirringthe reaction mixture was stirred for 10 minutes
2. stirringthe reaction mixture was stirred for 16 hours
3. customThe layers were separated
4. extractionthe aqueous layer was extracted with dichloromethane (2×100 mL)
5. washwashed with water and brine
6. dry with materialdried over sodium sulfate
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified by chromatography on a HORIZON HPFC system (40+M cartridge
10. washeluting with a gradient of 2 to 25% CMA in chloroform)
11. customA solid was isolated by filtration
12. washrinsed with acetonitrile