Methods for the synthesis of cyclic phosphonate ester were investigated.Fifteen 6-member and 7-member cyclic phosphonate esters with various alkykl-structure were prepored through three procedures.

• 本文研究了环状膦酸酯的合成方法，通过三种方法合成了十五个具有各种烷基结构的六元和七元环膦酸酯。