申请人:Mazor Royi
公开号:US20120029224A1
公开(公告)日:2012-02-02
A process for preparing halogen-substituted aryl phosphonates represented by formula (I): wherein each Hal independently represents halogen; k is 1 or 2; n is an integer between 1 and 5, inclusive; m is an integer between 1 and 3, inclusive; and R is a straight or branched C1-C5 alkyl group which may be optionally substituted with one or more halogen atoms, which process comprises reacting under heating a compound represented by the following formula: wherein X is a leaving group, with trialkyl phosphite of the formula (RO)
3
P, wherein the product of Formula I is produced and maintained in a liquid form and functions as an indigenous reaction liquid medium for suspending or dissolving the reactants, wherein the temperature of the reaction mixture is not less than the melting temperature of said compound of Formula I during at least a portion of the reaction time, and recovering the product of Formula I in a liquid form.
一种制备公式(I)所表示的卤素取代芳基膦酸酯的方法,其中每个Hal独立地表示卤素;k为1或2;n是介于1和5之间的整数,包括1和5;m是介于1和3之间的整数,包括1和3;R是直链或支链的C1-C5烷基,可以选择性地被一个或多个卤素原子取代,该方法包括在加热下反应以下化合物:其中X是离去基团,与公式(RO)3P的三烷基膦酸酯反应,公式I的产物以液态形式产生并维持为本地反应液体介质,用于悬浮或溶解反应物,在反应时间的至少一部分期间,反应混合物的温度不低于公式I化合物的熔点,并以液态形式回收公式I的产物。