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Cesium carbonate → 2-Methyl-3-{4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-3-propyl-phenyl}-2-phenoxy-propionic Acid Ethyl Ester

HRID 1393410
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HRID 1393410 반응식
[CH2:1]([O:3][C:4](=[O:25])[C:5]([CH3:24])([O:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[C:9]([CH2:14][CH2:15][CH3:16])[CH:8]=1)[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].[C:32]1([C:38]2[O:39][C:40]([CH3:56])=[C:41]([CH2:43][CH2:44]OS(C3C=CC(C)=CC=3)(=O)=O)[N:42]=2)[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1>CN(C=O)C>[CH2:1]([O:3][C:4](=[O:25])[C:5]([CH3:24])([O:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:44][CH2:43][C:41]2[N:42]=[C:38]([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[O:39][C:40]=2[CH3:56])=[C:9]([CH2:14][CH2:15][CH3:16])[CH:8]=1)[CH3:2]
참가 물질반응 조건실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 10796Cesium carbonateHCID 120517392-(5-Methyl-2-phenyloxazol-4-yl)ethyl 4-methylbenzenesulfonateHCID 208231533-(4-Hydroxy-3-propylphenyl)-2-methyl-2-phenoxy-propionic Acid Ethyl Ester

생성물 1

HCID 208231372-Methyl-3-{4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-3-propyl-phenyl}-2-phenoxy-propionic Acid Ethyl Ester수율 60%

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

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온도
55 °C

실험 절차

A solution of 3-(4-hydroxy-3-propylphenyl)-2-methyl-2-phenoxy-propionic acid ethyl ester (266 mg, 1.0 mmol) in DMF (10 mL) was treated with cesium carbonate (407 mg, 1.25 mmol) and toluene-4-sulfonic acid 2-(2-phenyl-5-methyl-oxazol-4-yl)-ethyl ester and then heated at 55° C. for 18 h. After cooling to ambient temperature, the mixture was partitioned between EtOAc and water. The aqueous phase was extracted with EtOAc and then the organic phases were dried (MgSO4), filtered and concentrated under reduced pressure. The residue was purified by column chromatography (100 mL SiO2, hexanes to 30% EtOAc/hexanes) to provide the desired product (315 mg, 60%) as a clear, colorless oil: MS (EI) 528.3 (M+H)+.

후처리

  1. temperatureAfter cooling to ambient temperature
  2. customthe mixture was partitioned between EtOAc and water
  3. extractionThe aqueous phase was extracted with EtOAc
  4. dry with materialthe organic phases were dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by column chromatography (100 mL SiO2, hexanes to 30% EtOAc/hexanes)

출처 및 근거

ORD 기록
ord-c2438bb70777444ba3cda20e73945e4d
출처 데이터셋
uspto-grants-2008_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07345070B2

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