Maleic Anhydride → 4,5-Dichlorotetrahydrophthalic anhydride

HRID 345958

反応式

HRID 345958 の反応式
[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]

参加物

4

反応物 2

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

生成物 1

HCID 541398954,5-Dichlorotetrahydrophthalic anhydride収率 61.8%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

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.

後処理

  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

出典と根拠

ORDレコード
ord-97799dd1ebef4fde987c5935e4a800db
出典データセット
uspto-grants-1991_10
特許番号
US05059697

関連ノート

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