Res Chem Intermed (2017) 43:4745–4758 DOI 10.1007/s11164-017-2909-4 Catalyst-free microwave-promoted one pot synthesis of 2-aryl benzoxazoles using MnO nanoparticles as a convenient oxidant under mild condition 1 1 • • Hossein Naeimi Zahra Rouzegar Soraya Rahmatinejad Received: 7 December 2016 / Accepted: 11 February 2017 / Published online: 27 February 2017 Springer Science+Business Media Dordrecht 2017 Abstract An efﬁcient and facile protocol for one pot synthesis of a series of 2-aryl benzoxazoles through coupling of o-aminophenol with aromatic aldehydes under microwave irradiation in the presence of MnO nanoparticles as oxidant reagent was demonstrated. The MnO nanoparticles were prepared via a solid-state chemical reaction technique. The structure of oxidant was assigned by Fourier transform infrared spec- troscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The target molecules were obtained in good to high yields, high purity and short reaction times. The pure products were identiﬁed and characterized by physical and spectral data 1 13 such as; melting point, IR, H NMR and C NMR. Graphical Abstract An efﬁcient and facil protocol for one pot synthesis of a series of 2-aryl benzoxazoles through coupling of o-aminophenol with aromatic aldehydes under microwave irradiation in the precense of MnO nanoparticles as oxidant
Research on Chemical Intermediates – Springer Journals
Published: Feb 27, 2017
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