Synthesis and Reversible Hydration-Dehydration System of Copolymers Bearing a Vicinal Tricarbonyl Structure
Synthesis and Reversible Hydration-Dehydration System of Copolymers Bearing a Vicinal Tricarbonyl Structure
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连位三羰基结构共聚物的合成及可逆水合-脱水体系
DOI：
10.1002/pola.26035
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Atsushi Sudoand Takeshi Endo
中科院分区：
文献类型：
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作者：
Takehito Dei;Kazuhide Morino;Atsushi Sudoand Takeshi Endo
合成了由带有邻位三羰基结构的苯乙烯（St）衍生物和各种乙烯基单体如St、甲基丙烯酸甲酯（MMA）和N-乙烯基吡咯烷酮（NVP）组成的新型共聚物，其通过（1）具有1，3-二酮结构的St衍生物与St、MMA和NVP的自由基共聚和（2）所得共聚物与N-溴代琥珀酰亚胺在DMSO中连续氧化以将它们的1，将侧链中的3-二酮部分转化为相应的邻位三羰基部分。它们的三羰基部分容易在含水丙酮中水合以生成在侧链中具有偕二醇结构的相应共聚物。另一方面，将所得的具有偕二醇结构的共聚物在真空下加热，能够成功地回收邻位三羰基部分，以证明该系统的可逆性质。研究了在水饱和的空气气氛下，粉末状的水化行为。© 2012 Wiley Periodicals，Inc. J Polym Sci Part A：Polym Chem，2012
Novel copolymers composed of a styrene (St) derivative bearing a vicinal tricarbonyl moiety and various vinyl monomers such as St, methyl methacrylate (MMA), andN‐vinylpyrrolidone (NVP) were synthesized by (1) radical copolymerization of a St derivative with a 1,3‐diketone structure with St, MMA, and NVP and (2) successive oxidation of the resulting copolymers withN‐bromosuccinimide in DMSO to convert their 1,3‐diketone moieties in the side chains into the corresponding vicinal tricarbonyl moieties. Their tricarbonyl moieties were readily hydrated in water‐containing acetone to generate the corresponding copolymers bearing geminal diol structures in the side chains. On the other hand, heating the resulting copolymers bearing the geminal diol structuresin vacuo‐enabled successful recovery of the vicinal tricarbonyl moieties to demonstrate the reversible nature of this system. The hydration behavior in powdery state under air atmosphere saturated by water was also investigated. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012