| 霍文阁,杨美,翟琳,赵继全,张月成.β-环糊精负载四甲基哌啶氮氧化物的合成及其在分子氧氧化醇反应中的催化性能[J].分子催化,2016,30(4):307-316 |
| β-环糊精负载四甲基哌啶氮氧化物的合成及其在分子氧氧化醇反应中的催化性能 |
| Synthesis of β-Cyclodextrin Supported 2, 2, 6, 6-Tetramethylpiperidine-1-oxyl and Its Catalytic Performance on the Oxidation of Alcohols with Molecular Oxygen as Oxidant |
| 投稿时间：2016-06-01 修订日期：2016-06-14 |
| DOI： |
| 中文关键词: β-环糊精 四甲基哌啶氮氧化物 负载 醇氧化 分子氧 |
| 英文关键词:β-cyclodextrin (β-CD) 2, 2, 6, 6-tetramethylpiperidine-1-oxyl (TEMPO) immobilization alcohol oxidation molecular oxygen |
| 基金项目:国家自然科学基金 (21276061); 河北省自然科学基金 (B2013202158);高等学校博士学科点专项科研基金(20121317110010) |
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| 中文摘要: |
| 以乙烯基二胺为连接臂将四甲基哌啶氮氧化物（TEMPO）负载于β-环糊精（β-CD）上，得到负载型催化剂β-CD-TEMPO.采用1H NMR、13C NMR 以及 FT-IR 等手段对β-CD-TEMPO进行了表征．将β-CD-TEMPO、CuBr2以及K2CO3结合构成催化体系，用于分子氧为氧化剂的醇的选择性氧化反应，结果表明该体系对苄基以及烯丙基伯醇的氧化显示出良好的催化活性和选择性.在负载催化剂中，乙烯基二胺既作为连接臂又作为配体与铜离子配位，使氧化反应顺利进行.负载型催化剂β-CD-TEMPO与产物容易分离，能够循环使用. |
| 英文摘要: |
| 2, 2, 6, 6-Tetramethylpiperidine-1-oxyl was supported on β-cyclodextrin with ethylenediamine as a linker and an immobilized catalyst β-CD-TEMPO was obtained. The β-CD-TEMPO was characterized by 1H NMR, 13C NMR and FT-IR. The β-CD-TEMPO in combination with CuBr2 and K2CO3 as a catalytic system was applied to the selective oxidation of alcohols with molecular oxygen as an oxidant, and showed high activity and selectivity in oxidation of primary benzyl alcohols and allyl alcohols. The ethylenediamine moiety in the immobilized catalyst acts as both a linker and a liand to coordinate with copper ion, which makes the oxidation reaction proceed smoothly. The immobilization of TEMPO on β-cyclodextrin allowed easy separation of the oxidation products ( aldehydes) from the catalytic system, and the recovered catalyst can be recycled for several times directly. |
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