Ethyl(2,2,2-trifluoroethyl)carbonate Basic information
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Product Name:
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Ethyl(2,2,2-trifluoroethyl)carbonate
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Synonyms:
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Ethyl(2,2,2-trifluoroethyl)carbonate;Carbonic acid, ethyl 2,2,2-trifluoroethyl ester
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CAS:
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156783-96-9
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MF:
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C5H7F3O3
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MW:
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172.1
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EINECS:
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Product Categories:
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Mol File:
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156783-96-9.mol
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Ethyl(2,2,2-trifluoroethyl)carbonate Chemical Properties
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Method for preparing fluorine-containing straight-chain carbonic ester lithium battery additive by using imidazole as catalyst
Current Patent Assignee: QUZHOU FURUI PHARMACEUTICAL TECH - CN116143624, 2023, A
Patent Family Members: CN116143624 A
Abstract
The invention relates to a method for preparing a fluorine-containing straight-chain carbonic ester lithium battery additive by using imidazole as a catalyst. The use amount of imidazole accounts for 5-10% of the total amount of transesterification raw materials; the target products of the ester exchange reaction are methyl trifluoroethyl carbonate, ethyl trifluoroethyl carbonate, methyl hexafluoroisopropyl carbonate and ethyl hexafluoroisopropyl carbonate; the ester exchange reaction is carried out according to the following steps in sequence: a, adding ester and alcohol in a certain proportion into a three-neck flask provided with a thermometer and a mechanical stirring device; b, adding a proper amount of imidazole into the flask, and uniformly stirring and mixing; c, after the reaction is finished, collecting all reaction products and unreacted raw materials through reduced pressure distillation to obtain a mixture containing target product ester, and evaporating and cooling residual liquid to recover imidazole; and d, distilling and purifying the mixture containing the target product ester to obtain the high-purity target product ester. The catalyst can be separated and recycled through simple treatment, and the ester exchange reaction catalyzed by the catalyst is safe, simple and convenient.
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Preparation method of hexafluoroisopropyl straight-chain carbonate lithium battery additive
Current Patent Assignee: QUZHOU FURUI PHARMACEUTICAL TECH CO LTD - CN116283580, 2023, A
Patent Family Members: CN116283580 A
Abstract
The invention discloses a preparation method of a hexafluoroisopropyl straight-chain carbonate lithium battery additive, which comprises the following steps: mixing hexafluoroisopropanol or a mixture of hexafluoroisopropanol, saturated monohydric alcohol and water with triphosgene, controlling the reaction temperature to be lower than 30 DEG C under the catalysis of organic amine and the action of an acid-binding agent, and reacting for 2-3 hours to obtain the hexafluoroisopropyl straight-chain carbonate lithium battery additive. And reacting to obtain a mixed solution containing hexafluoroisopropyl straight-chain carbonate, washing with water, drying, and distilling and purifying the mixed solution containing hexafluoroisopropyl straight-chain carbonate to obtain hexafluoroisopropyl straight-chain carbonate. The method has the characteristics of safe and simple process, low energy consumption, good yield and high purity.
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Isatin derivative redoxmer for electrochemical device
Current Patent Assignee: UNIVERSITY OF CHICAGO - US11715844, 2023, B2
Patent Family Members: US11715844 B2; US2022/285729 A1; US2023/327205 A1
Abstract
An electrochemical device includes a compound that is an isatin derivative. The electrochemical device may be a lithium ion battery, a sodium ion battery, or a redox flow battery, and the isatin derivative may be a bipolar redox active material.
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