Perfluoro-phthalide → Tetrafluorophthalic anhydride

HRID 265670Notes

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>>[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

Reactant 2

HCID 11032047Perfluoro-phthalide

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

Product 1

HCID 69545Tetrafluorophthalic anhydride

Procedure

A process for producing tetrafluorophthalic anhydride, which comprises reacting 3,4,5,6-tetrafluorophthaloyldifluoride and/or 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone with an Inorganic base or an organic acid to obtain tetrafluorophthalic anhydride.

Sources & evidence

ORD record: ord-b98eb214f2654977a7681a6ad78075cb
Source dataset: uspto-grants-1997_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05648504

Reaction notes

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