Iodoethane → 2-(2-Bromo-5-methoxy-phenyl)-2-ethyl-butyric acid

HRID 2275304

반응식

HRID 2275304 반응식
C[O:2][C:3](=[O:14])[CH2:4][C:5]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[CH:7][C:6]=1[Br:13].[H-].[Na+].[CH2:17]1OCCOCCOCCOCCO[CH2:18]1.[CH2:32](I)[CH3:33]>CN(C=O)C.C(OCC)(=O)C>[Br:13][C:6]1[CH:7]=[CH:8][C:9]([O:11][CH3:12])=[CH:10][C:5]=1[C:4]([CH2:32][CH3:33])([CH2:17][CH3:18])[C:3]([OH:2])=[O:14]

참가 물질

7

반응물 4

HCID 6340IodoethaneHCID 24758Sodium hydrideHCID 3633615-Crown-5HCID 10658910Methyl (2-bromo-5-methoxyphenyl)acetate

생성물 1

HCID 668353562-(2-Bromo-5-methoxy-phenyl)-2-ethyl-butyric acid

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

반응 조건

온도
140 °C

실험 절차

(2-Bromo-5-methoxy-phenyl)-acetic acid methyl ester (3.51 g, 13.5 mmol) was dissolved in DMF (4.5 ml), and added with NaH (2.1 g, 67.7 mmol). Subsequently, 15-crown-5 (1.38 ml, 6.8 mmol) and EtI (5.5 ml, 67.7 mmol) cooled to 0° C. were added to the mixture. The mixture was diluted with ethyl acetate and washed with water and saturated brine. The residues obtained after concentration under reduced pressure were purified by silica gel column (hexane-ethyl acetate). Then, the resultant was dissolved in ethanol (80 ml) and water (80 ml), added with KOH (91 g), and stirred at 140° C. The reaction solution was extracted with ethyl acetate, and washed with water and saturated brine. After concentration under reduced pressure, the target compound was obtained (10.62 g, 78%).

후처리

  1. additionwere added to the mixture
  2. washwashed with water and saturated brine
  3. customThe residues obtained
  4. concentrationafter concentration under reduced pressure
  5. customwere purified by silica gel column (hexane-ethyl acetate)
  6. dissolutionThen, the resultant was dissolved in ethanol (80 ml)
  7. additionwater (80 ml), added with KOH (91 g)
  8. extractionThe reaction solution was extracted with ethyl acetate
  9. washwashed with water and saturated brine
  10. concentrationAfter concentration under reduced pressure
  11. customthe target compound was obtained (10.62 g, 78%)

출처 및 근거

ORD 기록
ord-515fd476b674485e96f072808d02c3a4
출처 데이터셋
uspto-grants-2015_09
특허 번호
US09126931B2

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