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Magnetic Copper Ferrite Nanoparticles: An Inexpensive, Efficient, Recyclable Catalyst for the Synthesis of Substituted Benzoxazoles via Ullmann-Type Coupling under Ligand-Free Conditions

Daoshan Yang, Xiao Zhu, Wei Wei, Min Jiang, Ning Zhang, Dandan Ren, Jinmao You, Hua Wang*

*Shandong Province Key Laboratory of Life-Organic Analysis, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. of China, Email: huawang_qfnu126.com

D. Yang, X. Zhu, W. Wei, M. Jiang, N. Zhang, D. Ren, J. You, H. Wang, Synlett, 2014, 25, 729-735.

DOI: 10.1055/s-0033-1340599 (free Supporting Information)


Abstract

Readily available, air-stable, recyclable copper(II) ferrite nanopartices serve as a catalyst in a sustainable synthesis of benzoxazoles from substituted N-(2-halophenyl)benzamides. The nanocatalyst can be completely recovered with an external magnet and can be used seven times without significant loss of catalytic activity.

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Key Words

nanostructures, catalysts, copper, iron, benzoxazoles, cyclizations, coupling


ID: J60-Y2014