反应详情

DEAD (0.118 g; 0.75 mmol), triphenylphosphine (0.196 g; 0.75 mmol) and 4-(2-hydroxyethyl)morpholine (61 μl; 0.5 mmol) were added to a solution of N-acetyl-colchicinol (0.178 g; 0.5 mmol) in dichloromethane (5 ml) under argon atmosphere. The mixture was stirred at ambient temperature for 6 hours. After evaporation the residue was purified by flash chromatography eluting with a gradient of 2–10% ethanol/dichloromethane to give N-[(5S)-3-(2-morpholinoethoxy)-9,10,11-trimethoxy-6,7-dihydro-5H-dibenzo[a,c]cyclohepten-5-yl]acetamide.

1. customAfter evaporation the residue
2. customwas purified by flash chromatography
3. washeluting with a gradient of 2–10% ethanol/dichloromethane