A process for preparing halogen-substituted aryl phoshonates reresented b 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)3P, 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 ofsaid compound of Formula I during at least a portion of the reaction time, and recovering the product of Formula I n a liquid form.
一种制备卤代芳基
膦酸酯的方法,其
化学式为(I):
其中,每个Hal独立表示卤素;k为1或2;n为1至5之间的整数,包括1和5;m为1至3之间的整数,包括1和3;R是一种直链或支链的C1-C5烷基,可以选择性地被一个或多个卤素原子取代。该方法包括加热反应下述化合物:
其中,X是一个离开基团,与
化学式(RO)3P的三烷基
膦酸酯反应,产生
化学式(I)的产物,并将其保持为液态形式,作为本地反应液体介质,用于悬浮或溶解反应物。反应混合物的温度在反应时间的至少一部分期间不低于化合物(I)的熔点温度,并回收
化学式(I)的产物以液态形式。