Maleic Anhydride → 4,5-Dichlorotetrahydrophthalic anhydride

HRID 345958

반응식

HRID 345958 반응식
[Cl:1][C:2]([C:4]([Cl:6])=[CH2:5])=[CH2:3].[C:7]1(=[O:13])[O:12][C:10](=[O:11])[CH:9]=[CH:8]1>C1(C)C=CC=CC=1>[Cl:1][CH:2]1[C:4]([Cl:6])=[CH:5][CH:9]2[C:10]([O:12][C:7](=[O:13])[CH:8]2[CH2:3]1)=[O:11]

참가 물질

4

반응물 2

HCID 7923Maleic AnhydrideHCID 154472,3-Dichloro-1,3-butadiene

생성물 1

HCID 541398954,5-Dichlorotetrahydrophthalic anhydride수율 61.8%

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

A 500 mL reaction flask was charged with 34.5 g of 2,3-dichlorobutadiene and 27.5 g of maleic anhydride. 200 mL of toluene was added, along with a small amount of BHT (0.5 g). The solution was heated to reflux until the reaction was complete. The toluene was removed and the product recrystallized from ethyl acetate/hexanes to give 38.25 g (61.8%) of 4,5-dichlorotetrahydrophthalic anhydride.

후처리

  1. customA 500 mL reaction flask
  2. temperatureThe solution was heated
  3. temperatureto reflux until the reaction
  4. customThe toluene was removed
  5. customthe product recrystallized from ethyl acetate/hexanes

출처 및 근거

ORD 기록
ord-97799dd1ebef4fde987c5935e4a800db
출처 데이터셋
uspto-grants-1991_10
특허 번호
US05059697

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