
Journal of Fluorine Chemistry p. 233 - 237 (1993)
Update date:2022-07-30
Dmowski, Wojciech
Porwisiak, Jacek
The fluorination of pyromellitic acid (1) with sulphur tetrafluoride or pyromellitic dianhydride (2) by means of an SF4-HF mixture gave, besides the expected 1,2,4,5-tetrakis(trifluoromethyl)benzene (3), considerable amounts of 5,6-bis(trifluoromethyl)-1,
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