Preparation method of phosphorus-containing compound

The invention relates to a preparation method of a phosphorus-containing compound, and belongs to the field of pharmaceutical chemicals. According to the preparation method disclosed by the invention, continuous feeding can be carried out for multi-step reaction, and an intermediate does not need to be separated. The method provided by the invention is simple and convenient to operate, few in solvent variety, beneficial to solvent recovery treatment, capable of obtaining a high-purity product, relatively high in yield and suitable for industrial production implementation. 本发明涉及一种含磷化合物的制备方法，属于医药化工领域。本发明所述的制备方法，其可以连续投料进行多步反应，无需分离中间体。本发明提供的方法操作简便，溶剂种类少，有利于溶剂回收处理，能够获得高纯度的产物，收率较高，适于工业化生产实施。