An iminotris(dimethylamino)phosphorane (HMP₁) phosphazene superbase has been anchored onto poly(hexachlorocyclotriphosphazene‐co‐4,4′‐sulfonyldiphenol) (PZS)‐coated Fe₃O₄ magnetic nanoparticles (MNPs) through efficient phosphorous‐chloride (from PZS surface) and imino (from HMP₁) reaction. Subsequently, these novel heterogeneous Fe₃O₄@PZS@HMP₁ catalysts have been successfully utilized in the ring‐opening polymerization of ε‐caprolactone (ε‐CL) and δ‐valerolactone (δ‐VL). Notably, such catalysts can be easily removed from the reaction mixture and reused 3 times without obvious activity loss.

中文翻译：

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开发可回收和可循环使用的Fe3O4负载的有机催化剂，用于开环聚合

一个亚氨基三（二甲氨基）正膦（HMP ₁）磷腈超强碱已被锚定在聚（hexachlorocyclotriphosphazene-共-4,4'-磺酰基）（PZS）包被的Fe ₃ ö _4个从磁性纳米颗粒（的MNP）通过高效的磷氯化物（ PZS表面）与亚氨基（来自HMP ₁）反应。随后，这些新型的非均相Fe ₃ O ₄ @ PZS @ HMP ₁催化剂已成功地用于ε-己内酯（ε -CL）和δ-戊内酯（δ-VL）。值得注意的是，这样的催化剂可以容易地从反应混合物中除去并重复使用3次而没有明显的活性损失。