تفاعل #1511168
ord-68b290ece92342d983f972b118ddf581
معادلة التفاعل
المتفاعلات
الكواشف
المذيبات
ظروف التفاعل
المعالجة
- 1تركيزThe reaction mixture was concentrated under reduced pressure, saturated aqueous sodium hydrogencarbonate
- 2workup.ADDITIONwas added to the residue
- 3استخلاصthe mixture was extracted with dichloromethane
- 4غسيلthe organic layer was washed with saturated sodium chloride solution
- 5تجفيفdried with anhydrous sodium sulfate
- 6ترشيحAfter filtration
- 7تركيزthe filtrate was concentrated under reduced pressure
- 8أخرىthe residue was purified by silica gel chromatography (Isco Combiflash, 12 g, methanol:ethyl acetate=0:100 to 30:70, gradient)
الإجراء التجريبي
A solution of the compound (318 mg, 0.55 mmol) obtained in Example 6-1) and 4 M hydrochloric acid (1,4-dioxane solution, 0.69 mL) in methanol (2 mL) was stirred at room temperature for 21 h. The reaction mixture was concentrated under reduced pressure, saturated aqueous sodium hydrogencarbonate was added to the residue, the mixture was extracted with dichloromethane, and the organic layer was washed with saturated sodium chloride solution and dried with anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure, and the residue was purified by silica gel chromatography (Isco Combiflash, 12 g, methanol:ethyl acetate=0:100 to 30:70, gradient) to obtain the title compound (140 mg, 55%) as a colorless solid.