Acetic Acid → Tetrafluorophthalic anhydride

HRID 259952Notes

Reaction equation

HRID 259952 reaction equation
[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].C(O)(=[O:19])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

Participants

3

Reactant 2

HCID 176Acetic AcidHCID 110756133,4,5,6-tetrafluorobenzene-1,2-dicarbonyl Fluoride

Product 1

HCID 69545Tetrafluorophthalic anhydrideYield 73.5%

Procedure

Into a 300 ml glass reactor equipped with a reflux condenser and a stirrer, 100 g (0.413 mol) of the 3,4,5,6-tetrafluorophthaloyldifluoride separated by distillation from the mixture of Example 2, and 100 ml of acetic acid were charged, and the mixture was reacted at 130° C. for 1.5 hours with vigorous stirring. Then, the inorganic substance was removed by filtration, and the residue was separated by distillation to obtain 66.8 g of tetrafluorophthalic anhydride. The yield was 73.5%.

Workup

  1. customInto a 300 ml glass reactor equipped with a reflux condenser and a stirrer
  2. additionwere charged
  3. customthe mixture was reacted at 130° C. for 1.5 hours with vigorous stirring
  4. customThen, the inorganic substance was removed by filtration
  5. customthe residue was separated by distillation

Sources & evidence

ORD record
ord-1a5ced98cad84f61b4a2a25eda22b0d9
Source dataset
uspto-grants-1996_06
Patent number
US05523476

Reaction notes

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