Hydrochloric Acid → (4-{[2-(2-Furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxyphenyl)acetic acid

HRID 2221622노트

반응식

HRID 2221622 반응식
[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:27])=[C:9]([CH2:11][O:12][C:13]2[CH:18]=[CH:17][C:16]([CH2:19][C:20]([O:22]CC)=[O:21])=[CH:15][C:14]=2[O:25][CH3:26])[N:10]=1.Cl>[OH-].[K+]>[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]([CH3:27])=[C:9]([CH2:11][O:12][C:13]2[CH:18]=[CH:17][C:16]([CH2:19][C:20]([OH:22])=[O:21])=[CH:15][C:14]=2[O:25][CH3:26])[N:10]=1

참가 물질

4

반응물 2

HCID 313Hydrochloric AcidHCID 86605737HCID 86605737, 화합물

생성물 1

HCID 69216979(4-{[2-(2-Furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxyphenyl)acetic acid수율 95%

시약·촉매·용매 1

HCID 14797Potassium Hydroxide용매

실험 절차

Ethyl (4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxyphenyl)acetate (6.19 g) was dissolved in 0.25N potassium hydroxide mixed solution (potassium hydroxide 7.01 g/methanol 125 mL/tetrahydrofuran 354 mL/distilled water 21 mL), and the mixture was stirred overnight at room temperature. The reaction mixture was acidified by adding hydrochloric acid, and the mixture was extracted with ethyl acetate. The extract was washed successively with distilled water and saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was recrystallized from ethanol-diisopropyl ether to give (4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxyphenyl)acetic acid as a white solid (5.43 g, yield 95%). melting point: 162-164° C.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed successively with distilled water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was recrystallized from ethanol-diisopropyl ether

출처 및 근거

ORD 기록
ord-e1c425a24e6d43aab40e616d2d836433
출처 데이터셋
uspto-grants-2008_05
특허 번호
US07368578B2

반응 노트

불러오는 중…