Thiol-End-Functionalized Polyethylenes
Thiol-End-Functionalized Polyethylenes
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硫醇末端官能化聚乙烯
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Boisson
中科院分区：
文献类型：
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作者：
Jérôme Mazzolini;Ilham Mokthari;Rémi Briquel;O. Boyron;F. Delolme;V. Monteil;D. Bertin;D. Gigmes;F. D’Agosto;C. Boisson
通过配位化学和稳健的官能化化学，使用烯烃聚合来进行定义明确的和高度硫醇末端官能化的聚乙烯（PE-SH）的合成。采用钕基催化剂与正丁基辛基镁（BOMg）相结合的方法，首次在镁上催化聚乙烯链增长制备了二聚乙烯基镁化合物（PE-Mg-PE）。利用如此形成的碳-镁键的反应性，评估了几种官能化策略，主要目的是以最简单和最有效的方式生产目标PE-SH。特别地，成功地获得了多硫和硫代羰基化末端官能化的聚乙烯，并通过氢化铝锂（LiAlH 4）还原，得到具有高达90%硫醇链端官能度的所需PE。
Synthesis of well-defined and highly thiol-end-functionalized polyethylene (PE-SH) was performed using olefin polymerization by coordination chemistry and robust functionalization chemistries. Using a Nd-based catalyst in combination with n-butyloctylmagnesium (BOMg), dipolyethylenylmagnesium compounds (PE-Mg-PE) were first prepared by catalyzed polyethylene chain growth on magnesium. Taking advantage of the reactivity of the carbon−magnesium bonds so formed, several functionalization strategies were assessed with the main aim of producing the targeted PE-SH in the simplest and most efficient way. In particular, polysulfurs and thiothiocarbonylated-end-functionalized polyethylenes were successfully obtained and reduced by lithium aluminum hydride (LiAlH4) to give the desired PE with up to 90% thiol chain end functionality.