1,2-Dibromoethane → Sodium 1,2-Ethanedisulfonate

HRID 1740680

반응식

HRID 1740680 반응식
Br[CH2:2][CH2:3]Br.[S:5]([O-:8])([O-:7])=[O:6].[Na+:9].[Na+]>O>[CH2:2]([S:5]([O-:8])(=[O:7])=[O:6])[CH2:3][S:5]([O-:8])(=[O:7])=[O:6].[Na+:9].[Na+:9]

참가 물질

4

반응물 2

HCID 78391,2-DibromoethaneHCID 24437Sodium Sulfite

생성물 1

HCID 79220Sodium 1,2-Ethanedisulfonate수율 65.1%

시약·촉매·용매 1

HCID 962Water용매

실험 절차

A mixture of 1,2-dibromoethane (37.6 g, 0.20 mol) and sodium sulfite (63.0 g, 0.5 mol) in water (225 mL) was heated at reflux temperature for 20 h. After the mixture was cooled in the refrigerator, crystals were collected. The crude product was repeatedly recrystallized from water-ethanol. The trace amount of inorganic salts was removed by treating the aqueous solution with a small amount of silver(I) oxide and barium hydroxide. The basic solution was neutralized with Amberlite-120 ion-exchange resin and treated three times with Amberlite-120 (sodium form) ion-exchange resin. After removal of the water, the product was recrystallized from water-ethanol to afford the title compound (30.5 g).

후처리

  1. temperaturewas heated
  2. temperatureat reflux temperature for 20 h
  3. temperatureAfter the mixture was cooled in the refrigerator, crystals
  4. customwere collected
  5. customThe crude product was repeatedly recrystallized from water-ethanol
  6. customThe trace amount of inorganic salts was removed
  7. additionby treating the aqueous solution with a small amount of silver(I) oxide and barium hydroxide
  8. additiontreated three times with Amberlite-120 (sodium form) ion-exchange resin
  9. customAfter removal of the water
  10. customthe product was recrystallized from water-ethanol

출처 및 근거

ORD 기록
ord-f856d704d4a245c9a29ec4e346026a69
출처 데이터셋
uspto-grants-1999_10
특허 번호
US05972328

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