4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid]
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![4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid] structure](https://file.echemi.com/fileManage/upload/canonicalSmiles/20220811/f9fcd88c2156420498b41cb0dc9d65b2.png "4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid]")
4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid]
structure -
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CAS No:
3016-76-0
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Formula:
C19H10F6O8
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Chemical Name:
4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid]
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Synonyms:
1,2-Benzenedicarboxylic acid,4,4′-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]bis-;Phthalic acid,4,4′-[trifluoro-1-(trifluoromethyl)ethylidene]di-;Phthalic acid,4,4′-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]di-;4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid];2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane;4,4′-Hexafluoroisopropylidenebis(phthalic acid);4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis(1,2-benzenedicarboxylic dianhydride);2,2-Bis(3,4-dicarboxyphenyl)perfluoropropane;4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[phthalic acid];4,4′-(Hexafluoroisopropylidene)diphthalic acid;3,3′,4,4′-(1,1′-Hexafluoroisopropylidenebiphenyl)tetracarboxylic acid;2,2′-Bis(3,4-dicarboxyphenyl)hexafluoropropane
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CAS No:
4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid] Basic Attributes
480.27
480.27
221-154-7
DTXSID8062789
2917399090
4,4′-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[1,2-benzenedicarboxylic acid] Use and Manufacturing
2, 2-bis(3, 4-dimethylphenyl)hexafluoropropane is oxidized to 2, 2-bis(3, 4-dicarboxyphenyl)hexafluoropropane. 2, 2-bis(3, 4-dimethylphenyl)hexafluoropropane and 35percent HNO3 are fed into a continuous-flow tubular reactor. The tube diameter is 100 mm and length is 12 m. The temperature of the mixture within the reactor is increased to between 200° C. and 240° C. The volumetric flow in the reactor is set to 5.9 liters/minute. Nitric oxides are formed as a reaction by-product and are recycled to form HNO3. The effluent from the reactor is collected, depressurized, and cooled to room temperature. HNO3 is removed from the effluent. The desired product 2, 2-bis(3, 4-dicarboxyphenyl)hexafluoropropane precipitates within the effluent and is separated by centrifugation and washed with water. The purity of the product is 97percent 2, 2-bis(3, 4-dicarboxyphenyl)hexafluoropropane as determined by high pressure liquid chromatography (HPLC).; A volume flow of 100 ml/h of a mixture of 20 ml/h 2, 2-bis(3, 4-dimethylphenyl)hexafluoropropane and 70 ml/h 35percent aqueous HNO3 are fed into a microreactor. The micro reactor has of a micro mixer at the inlet having a typical diameter of about 2 mm and a volume of about 12 ml. The reaction pressure is controlled by a pressure control valve. The residence time part is divided into different sections (typically up to 4), which have a further feeding point with a consequent mixer for additionally fed HNO3. Furthermore, each section can be heated individually to control the temperature profile over the residence time. The temperature along the residence time was 210° C., the pressure was about 19, 000 hPa. In this example, no further HNO3 was added in the feeding points. The reaction mixture is pumped through the reactor with a residence time of about 7 minutes leading to complete conversion and a selectivity of about 97percent. The outflow of the reactor is depressurized and cooled to room temperature.Formation of Add 0.05 mol acetic anhydride, 100 ml toluene solvent and steps in a three-necked flaskThe obtained 0.01 mol of hexafluorotetracarboxylic acid in b) is heated and refluxed at 120 C for 10 h to obtain a crude product of hexafluorodianhydride, and the crude product of hexafluorodianhydride is recrystallized to obtain pure hexafluorodianhydride, and the conversion rate is 96%. .In a three-necked flask, 0.03 mol of the pure hexafluoroanthronitrile obtained in the step a), 20 g of potassium hydroxide, 40 ml of water and 100 ml of methanol were successively added, and the mixture was heated under reflux at 110 C for 40 h to carry out hydrolysis, followed by adding an appropriate amount. Concentrated hydrochloric acid, adjust the pH to 1-2, obtain a large amount of precipitate, the precipitate is separated by filtration and washed with water to obtain 100% conversion rate of hexafluorotetracarboxylic acid;
1,2-Benzenedicarboxylic acid, 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]bis-: ACTIVE
Computed Properties
Molecular Weight:480.3
XLogP3:4
Hydrogen Bond Donor Count:4
Hydrogen Bond Acceptor Count:14
Rotatable Bond Count:6
Exact Mass:480.02798625
Monoisotopic Mass:480.02798625
Topological Polar Surface Area:149
Heavy Atom Count:33
Complexity:741
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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