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There are several methods for fluorinating organic compounds
info：m.kmwu7.com | Release time：2023-02-04
There are several methods for fluorination of organic compounds, including selective fluorination. Fluorides of alkali metals or fluorides of antimony, mercury, and silver can be used to convert halogenated alkanes or sulfonic acid esters into fluorinated alkanes. The reaction is generally carried out in an anhydrous polar medium; Antimony pentachloride can also be used as a catalyst for fluorination in anhydrous hydrogen fluoride. Sulfur tetrafluoride can serve as a specific reagent for converting hydroxyl, carbonyl, and carboxyl groups into monofluoroalkyl, difluoromethyl, and trifluoromethyl groups, respectively. If necessary, catalysts such as hydrogen fluoride and boron trifluoride can be added. ② Perfluorination. Elemental fluorine can saturate multiple bonds in organic compounds with fluorine and convert all carbon hydrogen bonds into carbon fluorine bonds. Due to the large amount of exothermic reaction, it is often accompanied by various bond breaks and some coupling and polymerization reactions, resulting in extremely complex products. High priced metal fluorides such as cobalt trifluoride are fluorinating agents that are milder than elemental fluorides, and can be used to produce perfluoronaphthalene from a mixture of naphthalene and tetrahydronaphthalene. Other similar fluorinating agents include silver difluoride, manganese trifluoride, etc. ③ Electrochemical fluorination. Dissolve organic compounds in anhydrous hydrogen fluoride, add a small amount of conductive material if necessary, and perform electrochemical reactions under low pressure. Hydrogen is released at the cathode, and the carbon hydrogen bonds in the compound are converted into carbon fluorine bonds at the anode. Multiple bonds are saturated with fluorine and undergo some degradation reactions. This is one of the good methods for preparing perfluorinated organic compounds.
Many organic fluorine compounds have important applications. For example, polytetrafluoroethylene can be used as a component for artificial joints and has been used in the human body for a long time; The mixed emulsion of perfluoronaphthalene and perfluorotripropylamine can be used as a fluorocarbon blood substitute; Perfluorocyclobutane can be used as a food foaming agent; Perfluorotributylamine emulsion can replace all the blood of rats and enable them to survive normally.
The above is the summary of several methods for fluorinating organic compounds by Changshu Hongjia Fluorine Technology Co., Ltd. If there is any related knowledge that you do not understand, you can consult us
Many organic fluorine compounds have important applications. For example, polytetrafluoroethylene can be used as a component for artificial joints and has been used in the human body for a long time; The mixed emulsion of perfluoronaphthalene and perfluorotripropylamine can be used as a fluorocarbon blood substitute; Perfluorocyclobutane can be used as a food foaming agent; Perfluorotributylamine emulsion can replace all the blood of rats and enable them to survive normally.
The above is the summary of several methods for fluorinating organic compounds by Changshu Hongjia Fluorine Technology Co., Ltd. If there is any related knowledge that you do not understand, you can consult us
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