تفاعل #1511196
ord-fad2e87c3b2b44bd9d0fd6ff24986e5a
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 40:60, gradient)
الإجراء التجريبي
A solution of the compound (380 mg, 0.73 mmol) obtained in Example 19-1) and 4 M hydrochloric acid (1,4-dioxane solution, 2 mL) in methanol (2 mL) was stirred at room temperature for 14 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 40:60, gradient) to obtain the title compound (230 mg, 78%) as a colorless solid.