Palladium nanoparticles embedded in improved mesoporous silica: a pH‐triggered phase transfer catalyst for Sonogashira reaction |
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| Authors: | Xiaohua Zhao Xiang Liu Yaoqin Zhu Ming Lu |
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| Affiliation: | 1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, China;2. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China |
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| Abstract: | An efficient and reusable pH‐responsive mesoporous silica nanocomposite shuttle‐supported palladium catalyst was synthesized, which efficiently promotes the Sonogashira reaction in water‐based biphasic systems. This catalyst of shell‐embedded palladium nanoparticles is highly dispersed in organic phase in a pH range from 9 to 10 just like a homogeneous catalyst, and can be separated and reused like a heterogeneous one by adjusting the pH value of the aqueous medium. In addition, Sonogashira reactions can be performed without a copper co‐catalyst. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | mesoporous silica pH‐responsive Sonogashira reaction |
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