期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 6, 期 12, 页码 4345-4355出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cy02260f
关键词
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资金
- National Natural Science Foundation of China [21373093, 21474033, 21473064, 51273074]
- Fundamental Research Funds for the Central Universities of China [2014ZZGH019]
An N-heterocyclic carbene (NHC)-copper complex supported on hypercrosslinked polymers (HCPs) was successfully synthesized through a simple external cross-linking reaction. The structure and composition of the catalyst were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen sorption, Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and atomic emission spectrometry (AES). The obtained HCP-NHC-Cu catalyst possesses a large BET surface area, large pore volume, and good chemical and thermal stability. Hence, it was used as a solid catalyst for some organic transformations. An oxidative condensation reaction of indoles, 1,3-dicarbonyl compounds and phenylglyoxal monohydrate was developed with the aid of the HCP-NHC-Cu catalyst, which produced various polysubstituted olefins in high yield. The three-component click reaction of NaN3, phenylacetylene and benzyl halide, the Ullmann C-N coupling and the Glaser coupling reaction proceeded satisfactorily under the action of the HCP-NHC-Cu catalyst. At the end of these reactions, the catalyst was easily recovered and reused several times without significant loss of activity in all the reactions.
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