Synthesis method of environment-friendly phosphorus-nitrogen synergistic catalyst with linear polysiloxane skeleton

The invention discloses a synthesis method of a phosphorus-nitrogen synergistic catalyst with a linear polysiloxane skeleton, and belongs to the technical field of chemistry and materials. According to the preparation method, linear polysiloxane is taken as a molecular skeleton, the linear polysiloxane directly reacts with groups containing phosphorus and nitrogen through addition, substitution and the like to prepare the aminoethyl piperazine spiro pentaerythritol diphosphonate functionalized heptamethyltrisiloxane, the technical reaction condition is mild, the product does not need to be further recrystallized and purified, the preparation process is shortened, and the preparation cost is reduced. The production cost is greatly reduced, and the catalyst can significantly improve the synthesis efficiency of benzothiazole dyes. 本发明公开了一种具有线性聚硅氧烷骨架的磷氮协同催化剂的合成方法，属于化学、材料技术领域。本发明以线性聚硅氧烷作为分子骨架，通过加成、取代等反应，直接与含磷氮的基团反应制备得到氨基乙基哌嗪螺环季戊四醇双膦酸酯官能化的七甲基三硅氧烷，该技术反应条件温和，产物无需进一步重结晶提纯，缩短了制备流程，大大降低了生产成本，且该催化剂可以显著提高苯并噻唑类染料的合成效率。