α‐exomethylene lactone possessing acetal–ester linkage: Polymerization and postpolymerization modification for water‐soluble polymer

α‐exomethylene lactone possessing acetal–ester linkage: Polymerization and postpolymerization modification for water‐soluble polymer
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具有缩醛-酯键的α-外亚甲基内酯:水溶性聚合物的聚合和后聚合改性

DOI:
10.1002/pola.27931
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发表时间:
2016
期刊:
Journal of Polymer Science Part A
影响因子:
--
通讯作者:
T. Kitayama
T. Kitayama
中科院分区:
--
文献类型:
--
作者:
Yasuhiro Kohsaka;Y. Matsumoto;Tianyi Zhang;Y. Matsuhashi;T. Kitayama

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2,6 -二甲基- 5 -亚甲基- 1,3 -二氧杂甲- 4 - 1是一种新型的三官能团单体,由丙烯酸芳酯的Baylis-Hillman反应制备而成,在6元环中含有丙烯酸酯、酯和缩醛基团。自由基聚合和阴离子聚合分别以偶氮和酯烯酸酯引发,得到相应的乙烯基聚合物,通过酸水解缩醛-酯键,乙烯基聚合物转化为含有羟基和羧基垂坠的水溶性聚合物。通过与各无环单体的比较,讨论了聚合特性。
2,6‐Dimethyl‐5‐methylene‐1,3‐dioxa‐4‐one, a novel trifunctional monomer with acrylate, ester, and acetal moieties in a 6‐membered ring, was prepared from the Baylis–Hillman reaction of an aryl acrylate. The radical and anionic polymerization with azo and ester enolate initiators, respectively, afforded the corresponding vinyl polymers, which were converted to water‐soluble polymers bearing hydroxyl and carboxy pendants via the acid hydrolysis of the acetal–ester linkage. The polymerization characteristics are also discussed through the comparison with respective acyclic monomers.
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DOI: --
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