Ethanol → (2,6-Dichlorophenylthio)Acetic Acid

HRID 329771노트

반응식

HRID 329771 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[SH:9].C(O)C.C[O-].[Na+].Br[CH2:17][C:18]([OH:20])=[O:19]>CO>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[S:9][CH2:17][C:18]([OH:20])=[O:19]

참가 물질

6

반응물 4

HCID 702EthanolHCID 6227Bromoacetic AcidHCID 90671Benzenethiol, 2,6-dichloro-HCID 10942334Sodium Methoxide

생성물 1

HCID 1810591(2,6-Dichlorophenylthio)Acetic Acid

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

2,6-dichlorothiophenol, 50.0 gm, was added to 50 ml of ethanol. 63.8 ml of a 25% solution of sodium methoxide (2 equivalents) in methanol was then added to the system. The system was stirred at room temperature for approximately 3 hours. Afterwards, 20 ml of bromoacetic acid was added and the system then heated to reflux. The system was continued at reflux for 16 hours. The reaction was then stopped and the solvent removed by stripping. The resulting material was dissolved with basic aqueous solution water and then washed with methylene chloride. Concentrated HCl was next added to the aqueous solution to acidify it. The product was extracted with methylene chloride. The methylene chloride solution was stripped and triturated with hexane. The product was then filtered, washed with water and air dried to yield 55.3 gm of the 2,6-dichlorothiophenoxyacetic acid.

후처리

  1. temperaturethe system then heated to reflux
  2. temperatureat reflux for 16 hours
  3. customthe solvent removed by stripping
  4. dissolutionThe resulting material was dissolved with basic aqueous solution water
  5. washwashed with methylene chloride
  6. additionConcentrated HCl was next added to the aqueous solution
  7. extractionThe product was extracted with methylene chloride
  8. customtriturated with hexane
  9. filtrationThe product was then filtered
  10. washwashed with water and air
  11. customdried

출처 및 근거

ORD 기록
ord-1a34b8f7bf894e58b6f6e67a22edf23e
출처 데이터셋
uspto-grants-1990_01
특허 번호
US04892952

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