PRODUCTION METHOD OF FLUORINE-CONTAINING DIOXOLANE AND COMPOSITION USEFUL FOR PRODUCTION THEREOF

To provide a production method of a 1,3-dioxolane compound having a 2-difluoromethylene structure.SOLUTION: Provided is a production method comprising step A, step B, step C, and step D, where step A is a step of obtaining a reaction product by reacting a compound represented by formula (2) with at...

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Bibliographische Detailangaben
Hauptverfasser: SHINRI DAICHI, SHINOKI NORIYUKI, INO TADASHI, MINAMI FUMIKO, SUZUKI YUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a production method of a 1,3-dioxolane compound having a 2-difluoromethylene structure.SOLUTION: Provided is a production method comprising step A, step B, step C, and step D, where step A is a step of obtaining a reaction product by reacting a compound represented by formula (2) with at least one base selected from the group consisting of hydroxides, carbonates, and alkoxides of alkali metals and alkaline earth metals to be converted to a compound represented by formula (3), step B is a step of measuring a pH of an aqueous solution of the reaction product obtained in step (A) and adjusting the pH to 7.0 to 11.0 to be fed to the next step, step C is a step of obtaining a concentrate by concentrating, depending on the result of pH measurement in step B, the reaction product obtained in step A, a liquid obtained by mixing water with the reaction product, or the pH adjusted liquid, and step (D) of generating a compound represented by formula (1) by thermally decomposing a compound represented by formula (3) by heating the concentrate obtained in step (C).SELECTED DRAWING: None 【課題】2-(ジフルオロメチレン)構造を有する1,3-ジオキソラン化合物を製造する方法を提供する。【解決手段】工程A、工程B、工程C、及び工程Dを含む製造方法。(工程A)式(2)で表される化合物を、アルカリ金属及びアルカリ土類金属の、水酸化物、炭酸塩、並びにアルコキシドからなる群から選択される少なくとも1種の塩基と反応させて、式(3)で表される化合物へ変換して、反応生成物を得る工程。TIFF2023036452000025.tif27170(工程B)工程Aで得られる反応生成物の水溶液のpHを測定し、pHを7.0~11.0に調整して次の工程に供する工程。(工程C)工程BにおけるpH測定結果に応じて、工程Aで得られる反応生成物、当該反応生成物に水を混合した液、又はpH調整液を濃縮して濃縮物を得る工程。(工程D)工程Cで得られる濃縮物を加熱することにより式(3)で表される化合物を熱分解して、式(1)で表される化合物を生成する工程。【選択図】なし