135014-05-0Relevant articles and documents
A preparation method for halogenated 2,2-bis(perfluoro substituent)-1,3-dioxolane type compounds
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Paragraph 0043; 0044; 0046; 0047; 0048-0061; 0062; 0063, (2017/12/09)
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.
Thermal Decomposition of Fluorinated Dioxolane Carboxylates
Hung, Ming-H.,Farnham, William B.
, p. 563 - 570 (2007/10/02)
Synthesis of fluorodioxole olefin monomers by thermal decomposition of fluorinated dioxolane carboxylic acid and the corresponding acyl chloride was explored.Complex product formation is observed, including acyl fluoride from C1-F exchange, the hydro-dioxolane from proton abstraction, the cyclic ether ketone from dioxolane ring opening, and the epoxy acid fluoride from thermal rearrangement.The product distribution is strongly dependent upon reaction conditions.The main influential factors include the reaction temperature, the base used for the reaction, the presence or absence of solvent, and the counter ion associated with the intermediate salt.A mechanism is proposed to rationalize both the results and the product distribution.Methods to make authentic samples for product analysis are reported. Key Words Fluorine; Dioxolane; Dioxole; Thermal decomposition; Pyrolysis; Acid halide; Carboxylate; Fluoroolefin; Heterocyclic; Fluorocarbon.