Nitroxide polymer brushes as efficient and recoverable catalysts for the selective oxidation of primary alcohols to aldehydes
Nitroxide polymer brushes as efficient and recoverable catalysts for the selective oxidation of primary alcohols to aldehydes
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硝基氧聚合物刷作为伯醇选择性氧化为醛的高效且可回收的催化剂
DOI：
10.1002/app.44365
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发表时间：
2017-01
影响因子：
3
通讯作者：
褚晓萌
中科院分区：
文献类型：
--
作者：
刘少杰;王华丽;褚晓萌
以甲基丙烯酸2，2，6，6-四甲基-4-哌啶酯（2，2，6，6-Tetramethylpiperidinyloxy，克里思）为引发剂，通过电子转移原子转移自由基聚合（ARGET ATRP）再生表面活性剂，并以3-氯过氧苯甲酸为氧化剂，将TEMPO接枝到交联聚苯乙烯微球上。合成的氮氧聚合物刷包括均聚物刷、嵌段共聚物刷和具有不同克里思含量和分子量的无规共聚物刷。采用傅里叶变换红外光谱、扫描电子显微镜、透射电子显微镜、核磁共振谱和凝胶渗透色谱等手段对它们进行了表征。这些硝基氧刷轴承高克里思内容被用作可回收的催化剂，用于次氯酸盐和伯醇的有氧氧化为醛。研究和讨论了聚合物刷状结构对催化性能的影响。结果表明，这些氮氧聚合物刷具有优良的催化性能和良好的循环使用性能。© 2016 Wiley Periodicals，Inc. J.应用聚合物Sci. 2016，133，44365。
2,2,6,6-Tetramethylpiperidinyloxyl (TEMPO)-containing polymer brushes were grafted onto crosslinked polystyrene microspheres via surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) of 2,2,6,6-tetramethyl-4-piperidyl methacrylate, followed by an oxidation process with 3-chloroperoxybenzoic acid as oxidant. The synthesized nitroxide polymer brushes included homopolymer brushes, block copolymer brushes, and random copolymer brushes with various TEMPO contents and molecular weights. They were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, nuclear magnetic resonance spectroscopy, and gel permeation chromatography. These nitroxide brushes bearing high TEMPO contents were used as recoverable catalysts for the hypochlorite and aerobic oxidation of primary alcohols to aldehydes. The effects of polymer brush structure on the catalytic properties were studied and discussed. The results showed that these nitroxide polymer brushes had excellent catalytic properties and good recycling performances. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44365.
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影响因子：
3.3
作者：
S. J. Liu;Q. Hu;F. Zhao;X. Chu;P. Li;E. Tang
通讯作者：
S. J. Liu;Q. Hu;F. Zhao;X. Chu;P. Li;E. Tang
影响因子：
4.9
作者：
Yu-Hsuan Wang;Miao‐Ken Hung;Chun-Hao Lin;Hsiao-Chien Lin;J. Lee
通讯作者：
Yu-Hsuan Wang;Miao‐Ken Hung;Chun-Hao Lin;Hsiao-Chien Lin;J. Lee
DOI：
10.1021/jo0490494
发表时间：
2004-09
期刊：
The Journal of organic chemistry
影响因子：
--
作者：
P. Ferreira;E. Phillips;D. Rippon;S. Tsang;W. Hayes
通讯作者：
P. Ferreira;E. Phillips;D. Rippon;S. Tsang;W. Hayes
影响因子：
3.2
作者：
Jae‐Kwang Kim;G. Cheruvally;Jae-Won Choi;Jou‐Hyeon Ahn;S. Lee;Doo Seong Choi;C. Song
通讯作者：
Jae‐Kwang Kim;G. Cheruvally;Jae-Won Choi;Jou‐Hyeon Ahn;S. Lee;Doo Seong Choi;C. Song
影响因子：
9.2
作者：
Nakahara, Kentaro;Iriyama, Jiro;Cairns, Elton J.
通讯作者：
Cairns, Elton J.