Practical Processes for Producing Fluorinated alpha-Ketocarboxylic Esters and Analogues Thereof
申请人:Central Glass Company, Limited
公开号:US20180050976A1
公开(公告)日:2018-02-22
It is possible to produce a fluorine-containing α-ketocarboxylic ester hydrate by reacting a fluorine-containing α-hydroxycarboxylic ester with sodium hypochlorite or calcium hypochlorite of 21 mass % or greater in mass percentage of composition. Furthermore, it is possible to produce a fluorine-containing α-ketocarboxylic ester by reacting the hydrate with a dehydrating agent. Furthermore, it is possible to produce a fluorine-containing α-ketocarboxylic ester hemiketal by reacting the fluorine-containing α-ketocarboxylic ester hydrate with a lower alcohol or a trialkyl orthocarboxylate. Moreover, it is possible to produce a fluorine-containing α-ketocarboxylic ester by reacting the hemiketal with a dealcoholization agent.
可以通过将含
氟的α-羟基
羧酸酯与质量百分比为21%或更高的
次氯酸钠或
次氯酸钙反应来制备含
氟的α-
酮羧酸酯
水合物。此外,可以通过将
水合物与脱
水剂反应来制备含
氟的α-
酮羧酸酯。此外,可以通过将含
氟的α-
酮羧酸酯
水合物与低碳醇或三烷基正
羧酸酯反应来制备含
氟的α-
酮羧酸酯半
缩酮。此外,可以通过将半
缩酮与脱醇剂反应来制备含
氟的α-
酮羧酸酯。