Heck Reactions Catalyzed by Ultrasmall and Uniform Pd Nanoparticles Supported on Polyaniline

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• 作者：Lei Yu ; Yaping Huang ; Zheng Wei ; Yuanhua Ding ; Chenliang Su ; Qing Xu
• 刊名：Journal of Organic Chemistry
• 出版年：2015
• 出版时间：September 4, 2015
• 年：2015
• 卷：80
• 期：17
• 页码：8677-8683
• 全文大小：492K
• ISSN：1520-6904

文摘

Using air as the oxidant instead of the traditionally employed persulfates, the smaller and more uniform Pd nanoparticles (around 2 nm) supported on polyaniline (Pd@PANI) can be easily fabricated by the oxidation鈥損olymerization of aniline with PdCl<sub>2sub>. This material is an efficient and environmentally friendly catalyst for Heck reactions due to its recyclability, low loading, and ligand-free and mild reaction conditions. It was even tolerant to sulfur-containing substrates. This work reports the Pd@PANI-catalyzed Heck reactions with very wide substrate scopes, and discloses the catalytic mechanisms based on experimental findings and results of catalyst analysis and characterization.