申请人:DAIHACHI CHEMICAL INDUSTRY CO., LTD.
公开号:EP0808840A1
公开(公告)日:1997-11-26
A process of preparing a tribromoneopentyl chloroalkyl phosphate of the formula (3):
wherein R is hydrogen atom, an alkyl or chloroalkyl group. The process includes three steps: In the first step, an alkylene oxide is reacted with phosphorus trichloride in a chemical equivalent or less amount to the alkylene oxide to obtain a tris(chloroalkyl) phosphite of the formula (1):
wherein R is the same as defined above. In the second step, the tris(chloroalkyl) phosphite is reacted with chlorine to obtain a bis(chloroalkyl) phosphorochloridate of the formula (2):
wherein R is the same as defined above. And in the third step, the bis(chloroalkyl) phosphorochloridate is reacted with tribromoneopentyl alcohol.
一种制备式 (3) 的三溴新戊基氯烷基磷酸酯的工艺:
其中 R 为氢原子、烷基或氯烷基。该工艺包括三个步骤:第一步,将环氧亚烷基与三氯化磷反应,三氯化磷的化学用量等于或小于环氧亚烷基的化学用量,得到式(1)的三(氯烷基)亚磷酸酯:
其中 R 与上述定义相同。第二步,亚磷酸三(氯烷基)酯与氯反应,得到式(2)的亚磷酸二(氯烷基)酯:
其中 R 与上述定义相同。第三步,双(氯烷基)氯代磷酸盐与三溴新戊醇反应。