期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 7, 期 11, 页码 2262-2273出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cy00001d
关键词
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资金
- Spanish Ministerio de Economia y Competitividad (MINECO) [CTQ2015 6624P]
- ISO
- Coordinacion de la Investigacion Cientifica of the Universidad Michoacana de San Nicolas de Hidalgo (CIC-UMSNH, Mexico) [2.19]
- Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico) [290842]
- Vicerrectorado de Investigacion y Transferencia del Conocimiento of the Universidad de Alicante [UAFPU2016-034]
DNA nanotechnology has recently emerged as a powerful discipline with diverse applications. However, studies focused on the combination of DNA and metal nanoparticles for catalyst design are scanty. We have prepared a catalyst composed of palladium nanoparticles supported on DNA which has been characterised by TEM, SEM, EDX, UV, FTIR and XPS. The catalyst, mainly composed of Pd(II) and Pd(IV) species in the form of oxides, has been effectual in the copper- and ligand-free Sonogashira-Hagihara coupling of aryl iodides with terminal aromatic and aliphatic alkynes. The products are obtained in 54-86% isolated yields using low catalyst loading (0.5 mol%) under mild conditions (65 degrees C) in methanol without air exclusion. Moreover, the catalyst can be easily recovered and reused in five cycles and shows better performance than an array of commercial palladium catalysts. The mechanistic aspects of the reaction are also tackled in detail.
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