반응식
[CH3:1][C:2]([C:4]1[CH:5]=CC(O)=[CH:8][C:9]=1O)=O.[CH3:12][O:13][C:14]1[CH:19]=[C:18]([O:20][CH3:21])[CH:17]=[CH:16][C:15]=1[CH2:22][C:23]([OH:25])=[O:24].[C:26]([O:29][C:30](=[O:32])[CH3:31])(=[O:28])[CH3:27].C(N(CC)CC)C.C([O-])(O)=O.[Na+]>>[CH3:12][O:13][C:14]1[CH:19]=[C:18]([O:20][CH3:21])[CH:17]=[CH:16][C:15]=1[CH:22]1[C:9]([CH3:8])=[C:4]2[C:5](=[CH:27][C:26]([O:29][C:30](=[O:32])[CH3:31])([OH:28])[CH:1]=[CH:2]2)[O:24][C:23]1=[O:25]참가 물질
실험 절차
A mixture of 2,4-dihydroxyacetophenone (2.233 g, 14.67 mmol, 1 eq), 2, 4-dimethoxyphenylacetic acid (2.88 9, 14.67 mmol, 1 eq), acetic anhydride (7.5 mL, 78 mmol, 5 eq) and triethylamine (1.49 mL, 2.05 mmol, 1 eq) was stirred and heated to reflux under nitrogen for 48 hours. After cooling to room temperature the dark syrupy reaction mixture was poured into ice water (˜450 mL). The suspension of sticky, semisolid product was neutralized by slowly adding solid NaHCO3 to the mixture. The mixture was then allowed to solidify overnight. The dark solid was isolated by filtration, washed with water, sucked dry, and recrystallized from acetic acid to yield the title compound as an ivory crystalline solid. A second crop (0.95 g, 18.3%) was isolated from the mother liquor.
후처리
- temperatureheated
- temperatureto reflux under nitrogen for 48 hours
- additionThe suspension of sticky, semisolid product
- customThe dark solid was isolated by filtration
- washwashed with water
- customsucked dry
- customrecrystallized from acetic acid
출처 및 근거
- ORD 기록
- ord-59295032e9c949f4b30a3c484368a1c5
- 출처 데이터셋
- uspto-grants-2008_02
- 특허 번호
- US07329654B2
연결된 노트
불러오는 중…