1835-65-0Relevant articles and documents
Tetrafluoroisophthalonitrile production method
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Page/Page column 0011, (2016/10/10)
The present invention discloses a tetrafluoroisophthalonitrile production method which belongs to the technical field of fine chemical production, a tetrafluoroisophthalonitrile product is prepared from raw materials of tetrachlorophthalonitrile, anhydrous potassium fluoride and N, N dimethyl formamide in a molar ratio of tetrachlorophthalonitrile to anhydrous potassium fluoride to N, N dimethyl formamide of 1.0-1.1: 4.0-4.8: 20-25 by fluorination of the tetrachlorophthalonitrile, solid-liquid separation of reactants, drying and crushing. The production method has the advantages of simple process, high efficiency, low cost, short conversion time, no pollution, and high yield; and compared with a conventional method, the conversion temperature is low, due to the low conversion temperature, first, energy is saved, second, the making difficulty of a convertor is reduced, due to reduction of the conversion temperature, the yield of the end product tetrafluoroisophthalonitrile is improved to 90.0%, the content of the product can reach 99.0%; and the tetrafluoroisophthalonitrile product is an intermediate for synthesis of fluoroquinolone antibacterial drugs, polyimide materials and other functional materials, and is an important intermediate of pesticides of tefluthrin and transfluthrin.
Method for production of organic fluorine compound
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Page column 15,16, (2008/06/13)
A method for the production of an aromatic fluorine compound is provided which is capable of preventing the occurrence of benzoic acid fluorides during the course of a halogenation exchange reaction or allowing removal of the benzoic acid fluorides formed at all. A method for the production of an organic fluorine compound is disclosed which comprises preventing the occurrence of acid fluorides of an aromatic compound during the production of the organic fluorine compound by the reaction of an organic chlorine or bromine compound with a fluorinating agent in benzonitrile as a solvent or allowing removal of the acid fluorides formed.