期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 3, 期 7, 页码 1163-1169出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.200700410
关键词
copper; Michael addition; nanostructures; reusability; water
Silica@copper (SiO2@Cu) core-shell nanoparticles were synthesized and well characterized by XRD, TEM, AFM, XPS, UV/Vis, TGA-MS, and ICP-AES techniques. The synthesized SiO2@Cu core-shell nanoparticles were employed as catalysts for the conjugate addition of amines to alpha,beta-unsaturated compounds in water to obtain beta-amino carbonyl compounds in excellent yields in shorter reaction times. Furthermore, the catalyst works well for hetero-Michael addition reactions of heteroatom nucleophiles such as thiols to alpha,beta-unsaturated compounds. As the reaction is performed in water, it allows for easy recycling of the catalyst with consistent activity.
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