Sodium Carbonate → Tetrafluorophthalic anhydride

Participants

Reaction Steps

Into a 500 ml glass reactor equipped with a reflux condenser and a stirrer, 100 g (0.413 mol) of the 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone separated by distillation from the mixture of Example 2, and 43.8 g (0.413 mol) of sodium carbonate were charged, and the mixture was reacted at 130° C. for 8 hours with vigorous stirring. Then, the reaction mixture was separated by distillation to obtain 79.5 g of tetrafluorophthalic anhydride. The yield was 87.5%.

Provenance & Evidence