- Preparation method of 3-chloro-2,4,5-trifluorobenzoic acid
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The invention discloses a preparation method of 3-chloro-2,4,5-trifluorobenzoic acid. The reaction equation of the method is shown in the description. The preparation method concretely comprises the following steps: preparing a compound of formula (1) fro
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Paragraph 5; 6
(2019/12/29)
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- Synthesis and characterization of the first perfluoroaromatic polyimide of the AB-type
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Aminodefluorination of tetrafluorophthalic acid by anhydrous ammonia was shown to give 4-amino-3,5,6-trifluorophthalic acid selectively and in a high yield. Under the action of dicyclohexylcarbodiimide this acid was quantitatively converted into 4-amino-3
- Vaganova, Tamara A.,Shundrina, Inna K.,Kusov, Soltan Z.,Karpova, Elena V.,Bagryanskaya, Irina Yu.,Malykhin, Evgenij V.
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p. 129 - 136
(2012/03/27)
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- Process for the synthesis of 3-chloro-2,4,5-trifluorobenzoic acid
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An improved process for the preparation of 3-chloro-2,4,5-trifluorobenzoic acid is described which involves reaction of a diester of 3,4,5,6-tetrafluoro-1,2-benzenedicarboxylic acid with a substituted amine to afford 3-amino-2,4,5-trifluorobenzoic acid followed by subsequent conversion of the amio intermediate into 3-chloro-2,4,5-trifluorobenzoic acid.
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- 3-amino-2,4,5-trifluorobenzoic acid and a method for manufacture thereof
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3-amino-2,4,5-trifluorobenzoic acid which is a novel compound and is manufactured by heating 4-amino-3,5,6-trifluorophthalonitrile in the presence of an acid.
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