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Ligand-free palladium catalyzed Ullmann biaryl synthesis: ‘household’ reagents and mild reaction conditions

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Abstract

A palladium catalysed Ullmann biaryl synthesis has been developed using hydrazine hydrate as the reducing reagent at room temperature. The combination of Pd(OAc)2 and hydrazine hydrate works smoothly for the coupling of both electron-rich and electron-deficient aryl iodides, as well as hetero-aryl iodides, leading to a wide range of biaryls in good to excellent yields. The reaction requires only 1 mol% Pd(OAc)2 and the in situ generated palladium naoparticles are found to be active catalysts.

Graphical abstract: Ligand-free palladium catalyzed Ullmann biaryl synthesis: ‘household’ reagents and mild reaction conditions

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Publication details

The article was received on 11 Dec 2018, accepted on 31 Jan 2019 and first published on 01 Feb 2019


Article type: Communication
DOI: 10.1039/C8GC03862G
Citation: Green Chem., 2019, Advance Article

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    Ligand-free palladium catalyzed Ullmann biaryl synthesis: ‘household’ reagents and mild reaction conditions

    X. Gong, J. Wu, Y. Meng, Y. Zhang, L. Ye and C. Zhu, Green Chem., 2019, Advance Article , DOI: 10.1039/C8GC03862G

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