تفاعل #709444

معادلة التفاعل

tetrafluorophthalic anhydride

water

→

tetrafluorophthalic acid

المردود 90.0%

ظروف التفاعل

المعالجة

1. 1
   استخلاصThen, the product was extracted twice with 300 ml of ether
2. 2
   أخرىthe ether layer thus obtained
3. 3
   تجفيفwas dried with anhydrous magnesium sulfate
4. 4
   تركيزconcentrated by distillation

الإجراء التجريبي

After mixing 10 g (0.945 mol) of tetrafluorophthalic anhydride obtained in the above step with 60 ml of water, the mixture was stirred for 3 hours at room temperature. Then, the product was extracted twice with 300 ml of ether and the ether layer thus obtained was dried with anhydrous magnesium sulfate and concentrated by distillation to provide 9.7 g (yield 90%) of tetrafluorophthalic acid as white crystals. By recrystalizing the crystals from an aqueous 6N hydrochloric acid solution, crystals having higher purity (99.5%) were obtained.

المصدر