Diethyl Ether → 1-(3-Bromo-2-methylphenyl)ethanone

HRID 1439561노트

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HRID 1439561 반응식
[Mg].CI.[CH3:4][C:5]1[C:10]([Br:11])=[CH:9][CH:8]=[CH:7][C:6]=1C#N.CC[O:16][CH2:17][CH3:18]>>[Br:11][C:10]1[C:5]([CH3:4])=[C:6]([C:17](=[O:16])[CH3:18])[CH:7]=[CH:8][CH:9]=1

참가 물질

5

반응물 4

HCID 3283Diethyl Ether2회HCID 6328Methyl iodideHCID 5462224MagnesiumHCID 234335373-Bromo-2-methylbenzonitrile

생성물 1

HCID 204801311-(3-Bromo-2-methylphenyl)ethanone

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온도
0 °C

실험 절차

To a stirred and refluxing Grignard-complex, previously prepared starting from 7.3 parts of magnesium, 52.6 parts of methyl iodide in 160 parts of ether, is added dropwise a solution of 19.6 parts of 3'-bromo-2'-methylbenzonitrile in 40 parts of ether. Upon completion, stirring at reflux is continued for 20 hours. The reaction mixture is cooled to 0° C and poured onto 500 parts of ice-water while stirring vigorously. The ethereal phase is separated, dried and evaporated. The residue is boiled in 60 parts of a 6N hydrochloric acid solution for 10 minutes. The separated oil is extracted with ether. The extract is washed with water, dried and evaporated. The residue is distilled, yielding 3'-bromo-2'-methylacetophenone; bp. 125°-128° C at 10 mm. pressure.

후처리

  1. temperaturerefluxing Grignard-complex
  2. custompreviously prepared
  3. stirringUpon completion, stirring
  4. temperatureat reflux
  5. stirringwhile stirring vigorously
  6. customThe ethereal phase is separated
  7. customdried
  8. customevaporated
  9. waitThe residue is boiled in 60 parts of a 6N hydrochloric acid solution for 10 minutes
  10. extractionThe separated oil is extracted with ether
  11. washThe extract is washed with water
  12. customdried
  13. customevaporated
  14. distillationThe residue is distilled

출처 및 근거

ORD 기록
ord-4b09e9f5d315447197ff7c8b1a1cdea7
출처 데이터셋
uspto-grants-1977_11
특허 번호
US04060528

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