1,3-Dibromopropane → 2-(3-Bromopropoxy)-1-methoxy-3-methylbenzene

HRID 1712371노트

반응식

HRID 1712371 반응식
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[C:5]([CH3:9])[C:4]=1[OH:10].C(=O)([O-])[O-].[K+].[K+].[Br:17][CH2:18][CH2:19][CH2:20]Br>C(#N)C.O>[Br:17][CH2:18][CH2:19][CH2:20][O:10][C:4]1[C:5]([CH3:9])=[CH:6][CH:7]=[CH:8][C:3]=1[O:2][CH3:1]

참가 물질

6

반응물 3

HCID 80011,3-DibromopropaneHCID 11430Potassium CarbonateHCID 761732-Methoxy-6-methylphenol

생성물 1

HCID 538466042-(3-Bromopropoxy)-1-methoxy-3-methylbenzene

시약·촉매·용매 2

HCID 962Water용매HCID 6342Acetonitrile용매

실험 절차

The mixture of 2.50 g of 2-methoxy-6-methylphenol, 3.75 g of potassium carbonate and 18.3 ml of 1,3-dibromopropane in 50 ml of acetonitrile is stirred at reflux with stirring over 16 hours. The reaction mixture is cooled, diluted with 200 ml of water and extracted with tert-butyl methyl ether (2×200 ml). The organic phases are washed successively with water (200 ml) and brine (200 ml), dried over sodium sulphate, filtered and concentrated by evaporation. The title compound is obtained as a yellowish oil from the residue by means of flash chromatography (SiO2 60F). Rf=0.59 (1:1 EtOAc-heptane); Rt=5.10.

후처리

  1. temperatureat reflux
  2. stirringwith stirring over 16 hours
  3. temperatureThe reaction mixture is cooled
  4. extractionextracted with tert-butyl methyl ether (2×200 ml)
  5. washThe organic phases are washed successively with water (200 ml) and brine (200 ml)
  6. dry with materialdried over sodium sulphate
  7. filtrationfiltered
  8. concentrationconcentrated by evaporation

출처 및 근거

ORD 기록
ord-b1e8f9e7fe044508b7d7c70e885086b4
출처 데이터셋
uspto-grants-2010_09
특허 번호
US07790715B2

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