Post-Polymerization Modification of Ring Opening Metathesis Polymerization (ROMP)-Derived Materials Using Wittig Reactions
Post-Polymerization Modification of Ring Opening Metathesis Polymerization (ROMP)-Derived Materials Using Wittig Reactions
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DOI：
10.3390/polym12061247
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发表时间：
2020-05
期刊：
影响因子：
5
通讯作者：
R. Duty;C. Hobbs
中科院分区：
文献类型：
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作者：
R. Duty;C. Hobbs
本通讯描述了我们最近利用维蒂希烯化反应对通过开环复分解聚合 (ROMP) 制备的聚降冰片烯衍生物进行聚合后改性的努力。聚合含α-溴酯的降冰片烯提供可以容易地被三苯基膦取代的聚合物。然后将所得聚合鏻盐去质子化以形成内鎓盐，该内鎓盐以一锅方式与各种芳基醛反应以产生相应的肉桂酸酯。这些材料可以通过光诱导的[2 + 2]环加成交联反应进行进一步改性。
This communication describes our recent efforts to utilize Wittig olefination reactions for the post-polymerization modification of polynorbornene derivatives prepared through ring opening metathesis polymerization (ROMP). Polymerizing α-bromo ester-containing norbornenes provides polymers that can undergo facile substitution with triphenylphosphine. The resulting polymeric phosphonium salt is then deprotonated to form an ylide that undergoes reaction with various aryl aldehydes in a one-pot fashion to yield the respective cinnamates. These materials can undergo further modification through photo-induced [2 + 2] cycloaddition cross-linking reactions.