Sodium Hydroxide → 4-[3-[3-Hydroxy-4-(methoxycarbonyl)-2-propylphenoxy)propoxy]-alpha-oxobenzeneacetic acid
반응식
C([O:3][C:4](=[O:32])[C:5](=[O:31])[C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][CH2:14][CH2:15][O:16][C:17]2[CH:22]=[CH:21][C:20]([C:23]([O:25][CH3:26])=[O:24])=[C:19]([OH:27])[C:18]=2[CH2:28][CH2:29][CH3:30])=[CH:8][CH:7]=1)C.[OH-].[Na+]>CO>[OH:27][C:19]1[C:18]([CH2:28][CH2:29][CH3:30])=[C:17]([CH:22]=[CH:21][C:20]=1[C:23]([O:25][CH3:26])=[O:24])[O:16][CH2:15][CH2:14][CH2:13][O:12][C:9]1[CH:8]=[CH:7][C:6]([C:5](=[O:31])[C:4]([OH:32])=[O:3])=[CH:11][CH:10]=1참가 물질
4
실험 절차
As in Example 19, a solution of 4-[3-[3-hydroxy-4-(methoxycarbonyl)-2-propylphenoxy)propoxy]-alpha-oxobenzeneacetic acid ethyl ester (0.3 g) in methanol (30 mL) was treated with 4N sodium hydroxide (0.53 mL) and then was stirred at room temperature for 1 hour. Most of the solvents were removed in vacuo, then the mixture was acidified with 3N hydrochloric acid and extracted with ethyl acetate. The dried (MgSO4) extracts were evaporated and the crude acid was crystallized from a carbon tetrachloride-hexane mixture containing a small amount of dichloromethane to yield 0.164 g of 4-[3-[3-hydroxy-4-(methoxycarbonyl)-2-propylphenoxy)propoxy]-alpha-oxobenzeneacetic acid, as a colorless solid, mp 86°-87° C.
후처리
- customMost of the solvents were removed in vacuo
- extractionextracted with ethyl acetate
- dry with materialThe dried (MgSO4) extracts
- customwere evaporated
- customthe crude acid was crystallized from a carbon tetrachloride-hexane mixture
- additioncontaining a small amount of dichloromethane
출처 및 근거
- ORD 기록
- ord-4357bd1ae5c8411e8e06b12f04ebd48b
- 출처 데이터셋
- uspto-grants-1994_09
- 특허 번호
- US05344843
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