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题名: Aerobic oxidative coupling of alcohols and amines over Au-Pd/resin in water: Au/Pd molar ratios switch the reaction pathways to amides or imines
作者: Zhang, Leilei1, 2;  Wang, Wentao1;  Wang, Aiqin1;  Cui, Yitao3;  Yang, Xiaofeng1;  Huang, Yanqiang1;  Liu, Xiaoyan1;  Liu, Wengang2;  Son, Jin-Young3;  Oji, Hiroshi3;  Zhang, Tao1
刊名: GREEN CHEMISTRY
发表日期: 2013
DOI: 10.1039/c3gc41117f
卷: 15, 期:10, 页:2680-2684
收录类别: SCI ;  CCR
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A facile switch of the reaction pathways of aerobic oxidative coupling of alcohols and amines from amidation to imination was realized for the first time by tuning the Au/Pd ratios in ion-exchange resin supported Au-Pd alloy catalysts (Au-Pd/resin). Amides were obtained with high yields on Au6Pd/resin while imines were obtained over AuPd4/resin. Various alcohols and amines underwent oxidative coupling smoothly in water to afford the desired products with good to excellent yields. Further investigation on the reaction mechanism suggested the synergistic effect between Au and Pd determined the adsorption strength of the aldehyde intermediate, which in turn dictated the reaction pathways. That is, on Au-rich alloys (e.g., Au6Pd) absorbed aldehyde species was formed, followed by further oxidation to yield amides, while on Pd-rich alloys (e.g., Au Pd-4), free aldehyde was generated, which then underwent condensation with amines to produce imines. The discovery might provide avenues to develop new efficient catalysts for the green synthesis of special chemicals.
关键词[WOS]: SUPPORTED GOLD NANOPARTICLES ;  CATALYTIC-ACTIVITY ;  MOLECULAR-OXYGEN ;  HYDROGENATION ;  ALDEHYDES ;  ESTERS ;  PD
语种: 英语
WOS记录号: WOS:000325593600005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137889
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Japan Synchrotron Radiat Res Inst, Ind Applicat Div, Sayo, Hyogo 6795198, Japan

Recommended Citation:
Zhang, Leilei,Wang, Wentao,Wang, Aiqin,et al. Aerobic oxidative coupling of alcohols and amines over Au-Pd/resin in water: Au/Pd molar ratios switch the reaction pathways to amides or imines[J]. GREEN CHEMISTRY,2013,15(10):2680-2684.
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