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Synlett 2009(3): 447-450  
DOI: 10.1055/s-0028-1087540
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

Silver Nanoparticles Supported by Novel Nickel Metal-Organic Frameworks: An Efficient Heterogeneous Catalyst for an A³ Coupling Reaction

Sujing Wang, Xiaoxiao He, Lexin Song*, Zhiyong Wang*
Hefei National Laboratory for Physical Science at Microscale, Joint Lab of Green Synthetic Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. of China
Fax: +86(551)3603185; e-Mail: zwang3@ustc.edu.cn.;
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Publication History

Received 23 September 2008
Publication Date:
21 January 2009 (online)

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Abstract

A novel heterogeneous catalyst of silver nanoparticles was prepared by using a nickel metal-organic framework (Ni-MOF) as a template. The catalyst has a very high catalytic activity and a strict structural selectivity towards linear aliphatic aldehydes in an A³ coupling reaction. The catalyst could be recovered by simple phase separation and reused for many times without obvious loss of activity.

Key words

silver nanoparticles - template - metal-organic frameworks - heterogeneous catalyst - A³ coupling

    References and Notes

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General Procedure for the A ³ Coupling Reaction To a solution of aldehyde (1.0 mmol) and amine (1.2 mmol) in MeCN (5.0 mL) was added a certain loading of catalyst (5.0 mg). Then the mixture was degassed in vacuum and put into a nitrogen atmosphere. After adding alkyne (1.5 mmol) into the mixture, it was heated at 70-80 ˚C for a required reaction time. Then the solid phase was filtered off and residue solvent was evaporated under vacuum. Product was obtained after purification by column chromatography.