Perfluoro-phthalide → Tetrafluorophthalic anhydride

HRID 259949

反応式

HRID 259949 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>FC(F)(F)C(O)=O>[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 65%

試薬・触媒・溶媒 1

HCID 6422Trifluoroacetic 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 trifluoroacetic acid were charged, and the mixture was refluxed for 72 hours with vigorous stirring. Then, the reaction mixture was separated by distillation to obtain 29.6 g of tetrafluorophthalic anhydride. The yield was 65%.

後処理

  1. customInto a 200 ml glass reactor equipped with a reflux condenser and a stirrer
  2. temperaturethe mixture was refluxed for 72 hours with vigorous stirring
  3. customThen, the reaction mixture was separated by distillation

出典と根拠

ORDレコード
ord-a5447d4cd48543ae8d09bfc0e87669c2
出典データセット
uspto-grants-1996_06
特許番号
US05523476

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