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A simplified and convenient laboratory-scale preparation of N-14 or N-15 high molecular weight poly(dichlorophosphazene) directly from PCl5

机译:直接从PCl5制备N-14或N-15高分子量聚二氯磷腈的简化便捷的实验室规模制备

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摘要

A simple and convenient onepot synthesis of THF solutions of high molecular weight poly(dichlorophosphazene) [NPCl2](n), or the N-15 isotopomer [(NPCl2)-N-15](n), starting directly from PCl5 and NH4Cl or (NH4Cl)-N-15 in a solution of 1,2,4-trichlorobenzene in the presence of sulfamic acid and calcium sulfate dihydrate, is described. The solutions of [NPCl2](n) in THF, which are obtained free of poly(tetrahydrofuran) by preparing them in the presence of K2CO3, can be reacted directly with phenols, biphenols, or even HO-CH2CF3 in the presence of K2CO3 Or Cs2CO3 to obtain, after a very simple workup, the corresponding polyphosphazene derivatives almost free of chlorine. [References: 31]
机译:直接从PCl5和NH4Cl直接或简单地一锅合成高分子量聚二氯磷腈[NPCl2](n)或N-15异构体[(NPCl2)-N-15](n)THF溶液描述了在氨基磺酸和二水合硫酸钙存在下的1,2,4-三氯苯溶液中的(NH4Cl)-N-15。通过在K2CO3存在下制备无聚四氢呋喃而获得的[NPCl2](n)在THF中的溶液,可以在K2CO3存在下直接与苯酚,双酚甚至HO-CH2CF3反应。经过非常简单的后处理后,Cs2CO3可以得到几乎不含氯的相应聚磷腈衍生物。 [参考:31]

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