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。