Syntheses of some fluorine-containing halomethanephosphonate and methylenebisphosphonate esters
作者:G.Michael Blackburn、Graham E. Taylor
DOI:10.1016/0022-328x(88)80339-5
日期:1988.6
The Michaelis-Becker reaction between diethyl sodiophosphite and either of the halofluoromethanes CF2Cl2 and CF3Br gives tetraethyl difluoromethylenebisphosphonate. By contrast, the corresponding reaction with CFCl3 gives not only diethyl dichlorofluoromethanephosphonate but also tetraethyl pyrophosphate as the major product. Diethyl dichlorofluoromethanephosphonate, readily prepared by a normal Arbusov
亚磷酸二乙酯与卤代氟甲烷CF 2 Cl 2和CF 3 Br中的任何一种之间的Michaelis-Becker反应得到四氟二氟亚甲基双膦酸酯。相反,与CFCl 3的相应反应不仅产生二氯氟甲烷膦酸二乙酯,而且产生焦磷酸四乙酯作为主要产物。可以通过CCl 3 F通过常规Arbusov反应容易地制备的二氯二氟氟甲烷膦酸二乙酯与亚磷酸二乙酯反应生成四乙基氟亚甲基双膦酸酯,从而提供了这种有用物质的简单有效且廉价的合成方法。