تفاعل #41257
ord-a2e84658574c43539ec01afa4c612f72
معادلة التفاعل
المتفاعلات
الكواشف
المذيبات
ظروف التفاعل
المعالجة
- 1تركيزThe mixture was concentrated to dryness
- 2workup.DISSOLUTIONthe residue was dissolved in 10% methanol in dichloromethane
- 3أخرىTwo layers were separated
- 4استخلاصthe aqueous layer was extracted with dichloromethane (2×)
- 5تجفيفThe combined organic layers were dried over sodium sulfate
- 6ترشيحfiltered
- 7تركيزconcentrated under reduced pressure
- 8أخرىThe residue was purified by column chromatography
الإجراء التجريبي
The product of Example 81A (44 mg, 0.075 mmole) was stirred with 3 ml of formic acid for 4 hours. The mixture was concentrated to dryness and the residue was dissolved in 10% methanol in dichloromethane and stirred with saturated sodium bicarbonate. Two layers were separated and the aqueous layer was extracted with dichloromethane (2×). The combined organic layers were dried over sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography to provide the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 7.88 (s, 2H) 7.47-7.64 (m, 6H) 6.65 (d, J=8.81 Hz, 2H) 4.11-4.25 (m, 1H) 3.50-3.66 (m, 1H) 3.25-3.37 (m, 1H) 2.92-3.07 (m, 1H) 2.71-2.82 (m, 1H) 2.51-2.69 (m, 3H) 2.34 (s, 3H) 2.13-2.25 (m, 1H) 1.90-2.05 (m, 1H). MS: (M+H)+=345.