Perfluoro-phthalide → Tetrafluorophthalic anhydride

HRID 259948

反応式

HRID 259948 の反応式
[F:1][C:2]1[C:10]([F:11])=[C:9]([F:12])[C:8]([F:13])=[C:4]([C:5](F)=[O:6])[C:3]=1[C:14](F)=[O:15].FC1(F)C2C(=C(F)C(F)=C(F)C=2F)C(=O)[O:19]1>C(O)(=O)C>[F:1][C:2]1[C:10]([F:11])=[C:9]([F:12])[C:8]([F:13])=[C:4]2[C:5](=[O:19])[O:6][C:14](=[O:15])[C:3]=12

参加物

4

反応物 2

HCID 11032047Perfluoro-phthalideHCID 110756133,4,5,6-tetrafluorobenzene-1,2-dicarbonyl Fluoride

生成物 1

HCID 69545Tetrafluorophthalic anhydride収率 64.3%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

実験手順

Into a 200 ml glass reactor equipped with a reflux condenser and a stirrer, 50 g (0.207 mol) of the mixture (1:1) of the 3,4,5,6-tetrafluorophthaloyldifluoride and the 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone of Example 2, and 50 ml of acetic acid were charged, and the mixture was refluxed for 16 hours with vigorous stirring. Then, the reaction mixture was separated by distillation to obtain 29.3 g of tetrafluorophthalic anhydride. The yield was 64.3%.

後処理

  1. customInto a 200 ml glass reactor equipped with a reflux condenser and a stirrer
  2. temperaturethe mixture was refluxed for 16 hours with vigorous stirring
  3. customThen, the reaction mixture was separated by distillation

出典と根拠

ORDレコード
ord-229d9eed8e8d4ae0bb94ab5bc572ceb6
出典データセット
uspto-grants-1996_06
特許番号
US05523476

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