申请人:CENTRAL GLASS COMPANY, LIMITED
公开号:US20180186763A1
公开(公告)日:2018-07-05
The present invention provides an industrially applicable method for production of a fluorine-containing cyclopropane carboxylic acid compound useful as an intermediate for pharmaceutical and agrichemical products. A fluorine-containing cyclopropane monoester is obtained by: forming a fluorine-containing cyclic sulfate with the use of a fluorine-containing dial compound and sulfuryl fluoride (as a cyclic sulfuric esterification step); reacting the fluorine-containing cyclic sulfate with a malonic diester, thereby forming a fluorine-containing cyclopropane diester (as a cyclopropanation step); and hydrolyzing the fluorine-containing cyclopropane diester (as a hydrolysis step). The fluorine-containing cyclopropane carboxylic acid compound, such as fluorine-containing cyclopropane monoester or its salt, can be obtained with high chemical and optical purity by mixing the fluorine-containing cyclopropane monoester with an amine and subjecting the resulting salt of the fluorine-containing cyclopropane monoester and amine to recrystallization purification.
本发明提供了一种工业上可应用的生产含氟环丙烷羧酸化合物的方法,该化合物可用作制药和农药产品的中间体。通过以下步骤获得含氟环丙烷单酯:使用含氟二醇化合物和氟磺酰氟形成含氟环状硫酸酯(作为环状硫酸酯化步骤);将含氟环状硫酸酯与丙二酸二酯反应,从而形成含氟环丙烷二酯(作为环丙烷化步骤);并水解含氟环丙烷二酯(作为水解步骤)。通过将含氟环丙烷单酯与胺混合并将所得的含氟环丙烷单酯和胺的盐进行重结晶纯化,可以获得高化学和光学纯度的含氟环丙烷羧酸化合物,例如含氟环丙烷单酯或其盐。