反应详情

To 4-(3-cyclopentyloxy-4-methoxyphenyl)-4-(3-aminophenylethynyl)cyclohexan-1-one (0.07 g, 0.18 mmol) in dichloromethane (2 mL) under an argon atmosphere. were added pyridine (three drops) and acetic anhydride (0.05 mL, 0.53 mmol) and the reaction was stirred at room temperature for 2 h. Hydrochloric acid (1N) was added, the mixture was extracted three times with dichloromethane, the extract was dried (magnesium sulfate) and was evaporated. Purification by flash chromatography, eluting with 45:55 ethyl acetate:hexanes, provided 4-(3-cyclopentyloxy-4-methoxyphenyl)-4-(3-acetamidophenylethynyl)cyclohexanone as a white solid. mp 63°-64° C.; Anal. (C28H31NO4.1.75 H2O) calcd: C, 70.49; H, 7.29; N, 2.94; found: C, 70.09; H, 6.94; N, 2.83.

1. extractionthe mixture was extracted three times with dichloromethane
2. dry with materialthe extract was dried (magnesium sulfate)
3. customwas evaporated
4. customPurification by flash chromatography
5. washeluting with 45:55 ethyl acetate