Phosphine/phenylacetylide-ligated Au clusters for multicomponent coupling reactions
文献类型：期刊论文
| 作者 | Haruta, Masatake2; Li, Gao2; Chen, Yongdong1,2; Liu, Chao2; Abroshan, Hadi3; Li, Zhimin2; Wang, Jin2 |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 340页码:287-294 |
| 关键词 | Au Clusters Alias Multicomponent Coupling Reactions a(3)-coupling Density Functional Theory |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2016.05.023 |
| 文献子类 | Article |
| 英文摘要 | Metal nanocatalysts with well-defined surface structures are fundamentally important for mechanistic investigations of chemical reactions and symmetric development of catalytic systems for higher specificity and efficiency. We investigate the catalytic activity of atomically precise phosphine/phenylacetylide-liga ted Au-25(PPh3)(10)(C equivalent to CPh)(5)X-2(X = Cl/Br) clusters in the multicomponent coupling reaction of alkynes, aldehydes, and amines. The clusters are well characterized using UV-vis spectroscopy, scanning transmission electron microscopy, and matrix-assisted laser desorption ionization mass spectrometry. The TiO2-supported cluster in polar solvents is found to be an efficient and recyclable catalyst for remarkable conversion of the substrate. The Au-25(PPh3)(10)(C equivalent to CPh)(5)X-2/TiO2 catalyst is tested for a range of alkyne, aldehyde and ketone, and amine derivatives. Aromatic aldehydes give rise to higher conversion than aliphatic counterparts. Interestingly, ketones are found to suppress the reaction completely, in contrast with that on conventional gold nanocatalysts. The reaction mechanism is investigated via kinetic studies and UV-vis spectroscopy as well as density functional theory calculations. Results show that ligand removal under reaction conditions is the first step in exposing surface gold atoms to the reactants, thereby providing catalytic sites for the activation of bonds of terminal alkynes. This work demonstrates the promise of Au-25(PPh3)(10)(C equivalent to CPh)(5)X-2 cluster in the multicomponent coupling reaction, and a combined approach of experiment and theory leads to mechanistic understanding at the atomic level. (C) 2016 Elsevier Inc. All rights reserved. |
| WOS关键词 | COMPLEX-CATALYZED SYNTHESIS ; GOLD CLUSTERS ; TERMINAL ALKYNES ; CO OXIDATION ; AU-25(SCH2CH2PH)(18) NANOCLUSTERS ; AU-25 NANOCLUSTERS ; ALDEHYDE ; PROPARGYLAMINES ; NANOPARTICLES ; AMINES |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000381165300029 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170036]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Gao |
| 作者单位 | 1.Southwest Petr Univ, Coll Chem & Chem Engn, Ctr New Energy Mat & Technol, Chengdu 610500, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China 3.Carnegie Mellon Univ, Dept Chem, 4400 5th Ave, Pittsburgh, PA 15213 USA |
| 推荐引用方式 GB/T 7714 | Haruta, Masatake,Li, Gao,Chen, Yongdong,et al. Phosphine/phenylacetylide-ligated Au clusters for multicomponent coupling reactions[J]. JOURNAL OF CATALYSIS,2016,340:287-294. |
| APA | Haruta, Masatake.,Li, Gao.,Chen, Yongdong.,Liu, Chao.,Abroshan, Hadi.,...&Wang, Jin.(2016).Phosphine/phenylacetylide-ligated Au clusters for multicomponent coupling reactions.JOURNAL OF CATALYSIS,340,287-294. |
| MLA | Haruta, Masatake,et al."Phosphine/phenylacetylide-ligated Au clusters for multicomponent coupling reactions".JOURNAL OF CATALYSIS 340(2016):287-294. |
入库方式： OAI收割
来源：大连化学物理研究所
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