Sodium Carbonate → Tetrafluorophthalic anhydride

HRID 259943

Reaction equation

HRID 259943 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].FC1(F)C2C(=C(F)C(F)=C(F)C=2F)C(=O)[O:19]1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C(C)=CC=CC=1>[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

5

Reactant 3

HCID 10340Sodium CarbonateHCID 11032047Perfluoro-phthalideHCID 110756133,4,5,6-tetrafluorobenzene-1,2-dicarbonyl Fluoride

Product 1

HCID 69545Tetrafluorophthalic anhydrideYield 91.5%

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

Into a 500 ml glass reactor equipped with a reflux condenser and a stirrer, 100 g (0.413 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, 43.8 g (0.413 mol) of sodium carbonate and 200 g of xylene were charged, and the mixture was reacted at 130° C. for 3 hours with vigorous stirring. Then, the inorganic substance was removed by filtration, and the residue was subjected to distillation to obtain 83.1 g of tetrafluorophthalic anhydride. The yield was 91.5%.

Workup

  1. customInto a 500 ml glass reactor equipped with a reflux condenser and a stirrer
  2. customthe mixture was reacted at 130° C. for 3 hours with vigorous stirring
  3. customThen, the inorganic substance was removed by filtration
  4. distillationthe residue was subjected to distillation

Sources & evidence

ORD record
ord-d4a197c767e9460fb2d107eea186e0f6
Source dataset
uspto-grants-1996_06
Patent number
US05523476

Linked notes

Loading…