| Identification | Back Directory | [Name]
6FCDA | [CAS]
139162-14-4 | [Synonyms]
6FCDA
9,9-bis(trifluoromethyl)-2,3,6,7-xanthenetetracarboxylic dianhydride
9,9-bis(trifluoromethyl)-2,3,6,7-xanthenetetracarboxylic dianhydride (6FCDA)
1H-Difuro[3,4-b:3',4'-i]xanthene-1,3,7,9(11H)-tetrone, 11,11-bis(trifluoromethyl)- | [Molecular Formula]
C19H4F6O7 | [MOL File]
139162-14-4.mol | [Molecular Weight]
458.22 |
| Hazard Information | Back Directory | [Preparation]
The preparation of 6FCDA is as follows:Add 154g of 9,9-bis(trifluoromethyl)-2,3,6,7-xanthene tetracarboxylic acid (0.31mol) obtained in step into a 1L three-necked flask, and then add 539g of acetic anhydride ( 5.28mol), the temperature was raised to 105±2°C and the reaction was stirred for 5-6h. After the reaction was completed, the temperature was lowered to 25±2°C, filtered, the filter cake was rinsed with 300 g of toluene, and vacuum dried at 80°C for 15 hours to obtain a white powdery solid 131 g of 9,9-bis(trifluoromethyl)-2,3,6,7-oxanthene tetracarboxyl dianhydride, purity (HPLC) was 99.6%, and yield was 91.8%.
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