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

HRID 585192노트

반응식

HRID 585192 반응식
[CH2:1]([O:3][C:4](=[O:22])[C:5]([CH3:21])([O:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)[CH3:2].[CH:23]1([C:29]2[O:30][C:31]([CH3:47])=[C:32]([CH2:34][CH2:35]OS(C3C=CC(C)=CC=3)(=O)=O)[N:33]=2)[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.C(OCC)(=O)C>[CH2:1]([O:3][C:4](=[O:22])[C:5]([CH3:21])([O:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:35][CH2:34][C:32]2[N:33]=[C:29]([CH:23]3[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]3)[O:30][C:31]=2[CH3:47])=[CH:9][CH:8]=1)[CH3:2]

참가 물질

6

반응물 3

HCID 10796Cesium carbonateHCID 11220314Ethyl 3-(4-hydroxyphenyl)-2-methyl-2-phenoxypropionateHCID 22340021Toluene-4-sulfonic acid 2-(2-cyclohexyl-5-methyloxazol-4-yl)-ethyl ester

생성물 1

HCID 208231432-Methyl-3-(4-{2-[5-methyl-2-cyclohexyl-oxazol-4-yl]-ethoxy}-phenyl)-2-phenoxypropionic Acid Ethyl Ester

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

반응 조건

온도
55 °C

실험 절차

3-(4-Hydroxyphenyl)-2-methyl-2-phenoxypropionic acid ethyl ester (300 mg, 1.0 mmol), toluene-4-sulfonic acid 2-(2-cyclohexyl-5-methyl-oxazol-4-yl)-ethyl ester (386 mg, 1.06 mmol) and Cs2CO3 (423 mg, 1.3 mmol) were combined in anhydrous DMF (7 mL) and stirred for 16 h at 55° C. under an atmosphere of nitrogen. The mixture was then cooled, diluted with ethyl acetate (50 mL), and washed with water and brine. The organic layer was dried with Na2SO4 and concentrated in vacuo to a viscous yellow oil. The residue was purified by flash column chromatography (100 g silica, 60×15 mL fractions, gradient elution 0-20% ethyl acetate in hexanes) to provide the ethyl ether compound as a colorless oil (177 mg, 28%).

후처리

  1. temperatureThe mixture was then cooled
  2. washwashed with water and brine
  3. dry with materialThe organic layer was dried with Na2SO4
  4. concentrationconcentrated in vacuo to a viscous yellow oil
  5. customThe residue was purified by flash column chromatography (100 g silica, 60×15 mL fractions, gradient elution 0-20% ethyl acetate in hexanes)
  6. customto provide the ethyl ether compound as a colorless oil (177 mg, 28%)

출처 및 근거

ORD 기록
ord-5c38aa5f0da3498694239f48717dd5bc
출처 데이터셋
uspto-grants-2005_08
특허 번호
US06930120B2

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