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    • 81. 发明授权
    • 3,3-dioxy-4,4,4-trifluorobutyric acid derivatives
    • 3,3-二氧基-4,4,4-三氟丁酸衍生物
    • US5739394A
    • 1998-04-14
    • US767581
    • 1996-12-16
    • Norbert Lui
    • Norbert Lui
    • C07C43/313C07C43/315C07C45/51C07C51/00C07C59/135C07C59/64C07C67/00C07C67/27C07C67/39C07C69/708C07C69/712C07D317/16C07D317/30C07D319/06C07D321/06C07D325/00C07C59/00
    • C07D317/30C07C43/313C07C43/315C07C45/515C07C59/135C07C67/00C07C67/27C07C69/708C07D317/16
    • The invention relates to novel 3,3-dioxy-4,4,4-trifluorobutyric acid derivatives of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent C.sub.1 -C.sub.10 -alkyl, or represent cyclohexyl, or represent optionally substituted C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.14 -arylalkyl, or R.sup.1 and R.sup.2 together represent C.sub.2 -C.sub.4 -alkylene which is optionally mono- or disubstituted by methyl, or optionally substituted ortho-arylene, R.sup.3 represents hydrogen or C.sub.1 -C.sub.10 -alkyl, or represents cycloalkyl, or represents optionally substituted C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.14 -arylalkyl, and X represents hydrogen, fluorine, chlorine or bromine, excluding methyl 4,4,4-trifluoro-3,3-dimethoxybutyrate, 4,4,4-trifluoro-3,3-dimethoxybutyric acid, ethyl 4,4,4-trifluoro-3,3-diethoxybutyrate, ethyl 4,4,4-trifluoro-3,3-ethylenedioxybutyrate and 4,4,4-trifluoro-3,3-ethylenedioxybutyric acid, a process for their preparation and for the preparation of further 3,3-dioxy-4,4,4-trifluorobutyric acid derivatives, as well as novel intermediates and processes for their preparation.
    • 本发明涉及式(I)的新的3,3-二氧基-4,4,4-三氟丁酸衍生物彼此表示C1-C10-烷基或代表环己基,或代表任选取代的C 6 -C 10 - 芳基或 C 7 -C 14 - 芳基烷基或R 1和R 2一起表示任选被甲基或任选取代的邻 - 亚芳基单取代或二取代的C 2 -C 4 - 亚烷基,R 3表示氢或C 1 -C 10 - 烷基,或表示环烷基,或表示 任选取代的C 6 -C 10 - 芳基或C 7 -C 14 - 芳烷基,X代表氢,氟,氯或溴,不包括4,4,4-三氟-3,3-二甲氧基丁酸甲酯,4,4,4-三氟-3 ,3-二甲氧基丁酸,4,4,4-三氟-3,3-二乙氧基丁酸乙酯,4,4,4-三氟-3,3-亚乙二氧基丁酸乙酯和4,4,4-三氟-3,3-亚乙二氧基丁酸 ,其制备方法和制备其它的3,3-二氧基-4,4,4-三氟丁酸衍生物,以及其制备新颖的中间体和方法。