Cyclic chlorophosphites of ortho-bridged phenols are made by reaction of an ortho-bridged bisphenol with PCl₃ in an inert solvent using a catalytic amount of a polymeric compound having a pyridine skeletal structure and a cross-linked structure to promote the reaction.
原桥双
酚的环状
氯膦酸盐是通过原桥双
酚与 PCl₃ 在惰性溶剂中反应制得的,使用催化剂量的具有
吡啶骨架结构和交联结构的聚合化合物来促进反应。