87075-01-2

Upstream product

• 127-18-4 1,1,2,2-tetrachloroethylene 
• 16282-67-0 bis(fluoroxy)difluoromethane 
• 22432-68-4 tetrachloroethylene carbonate 

Relevant academic research and scientific papers

Method for synthesizing chloro-2, 2-di (perfluoro substituent)-1, 3-dioxolane compound

The invention discloses a method for synthesizing chloro-2, 2-di (perfluoroalkyl)-1, 3-dioxolane. The method comprises the following steps: mixing 2, 2-di (perfluoroalkyl)-1, 3-dioxolane liquid with acatalyst, introducing chlorine gas, heating to the temperature of 100-200 DEG C, and carrying out chlorination reaction to obtain 4, 4, 5, 5-tetrachloro-2, 2-di (perfluoro substituent)-1, 3-dioxolane. The perfluoroalkyl is independently selected from C1-4 perfluoroalkyls or fluorine atoms. According to the method, liquid-phase chlorination reaction is adopted, the reaction temperature is effectively reduced, the activity of the catalyst in the reaction is high, the side reaction is relieved, the requirements on equipment are reduced, the method is safe and simple to operate, the quality stability of the obtained product is high, and the industrial application feasibility is high.

A preparation method for halogenated 2,2-bis(perfluoro substituent)-1,3-dioxolane type compounds

A gaseous-phase preparation method for halogenated 2,2-bis(perfluoro substituent)-1,3-dioxolane type compounds is disclosed. The method includes, reacting 2,2-bis(perfluoro substituent)-1,3-dioxolane with Cl2 and HF with the existence of a catalyst to obtain a corresponding halogenated 2,2-bis(perfluoro substituent)-1,3-dioxolane. The method can achieve a one-step reaction, and has characteristics of simple process steps, simple equipment, low energy consumption, and small amounts of the three wastes. The prepared halogenated 2,2-bis(perfluoro substituent)-1,3-dioxolane compounds are suitable for use as a polymerization monomer.

A new approach to the synthesis of 2,2-difluoro-1,3-dioxolanes

A direct and versatile way to prepare halogenated 2,2-difluoro-1,3-dioxolanes through the addition of bis(fluoroxy)difluoromethane (BDM) to halogenated alkenes (CF2=CFCF3, CF2=CFOCF2CF3, CF2=CHCF3, CF3CF=CFCF3, CFCl=CFCl, CFBr=CFBr, CCl2=CCl2, CHCl=CCl2, CHCl=CHCl, CH2=CHCl, CF2=CFCl, (CF3)2CFCF=CFCF3, CF2=CFBr, CF2=CF2) has been discovered. - Keywords: Synthesis; Difluorodioxolanes; NMR spectroscopy; IR spectroscopy; Mass spectrometry

Process for preparing halogenated 1,3-dioxolanes

This invention relates to a process for preparing 1,3-dioxolanes of formula: STR1 wherein; X1, X2, X3 and X4, like or different from one another, represent F, Cl, Br, I, CF2 OSO2 F, SO2 F, C(O)F, H, perhaloalkyl or oxyperhaloalkyl radicals containing from 1 to 5 carbon atoms, X5 and X6, like or different from each other, represent F or CF3. Said process is characterized in that a bis(fluoroxy)perfluoroalkane is reacted, at a temperature ranging from -140° C. to +60° C., with a halogenated olefin. This invention also relates to new 1,3-dioxolanes of formula (I) belonging to the class defined hereinbefore.

Process for preparing halogenated 1,3-dioxolanes and products obtained by the process

A process for preparing 1,3-dioxolanes of formula: wherein;, X1, X2, X3 and X4, like or different from one another, represent F, Cl, Br, I, CF2OSO2F, SO2F, C(O)F, H, perhaloalkyl or oxyperhaloalkyl radicals containing from 1 to 5 carhon atoms, X5 and X6, like or different from each other, represent F or CF3. Said process is characterized in that a bis(fluoroxy)perfluoroalkane is reacted, at a temperature ranging from -140°C to +60°C, with a halogenated olefin. New 1,3-dioxolanes of formula (I) belonging to the class defined hereinbefore.

Perfluorodioxole and its polymers

Perfluoro-1,3-dioxole is a useful monomer, which polymerizes to either amorphous or liquid homopolymers and copolymerizes with tetrafluoroethylene as well as with other monomers to both crystalline and amorphous copolymers having one or more such comonomers incorporated therein. Amorphous homopolymers and copolymers of perfluoro-1,3-dioxole are useful in such applications as glazing for reactors for hydrogen fluoride reactions. Amorphous homopolymers and amorphous or crystalline copolymers form self-supporting films and can be used for coatings and linings which are inert to most chemicals and are stain and weather resistant and as dielectrics for electrical and electronic equipment. Liquid homopolymers can be used as hydraulic fluids and heat exchange media.