A simple method for the synthesis of 1,4- and 1,5-diarylimidazoles has been developed. The method is based on the condensation of appropriate α-diketone monooxime with aromatic amines and formaldehyde in the presence of boron trifluoride etherate leading to the formation of stable boron trifluoride complexes of imidazole N-oxides. Further reduction of these complexes led to the formation of corresponding imidazoles.
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Published in Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1669–1676, November, 2014.
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Mityanov, V.S., Perevalov, V.P. & Tkach, I.I. Synthesis of 1,4- and 1,5-Diaryl-1H-Imidazoles. Chem Heterocycl Comp 50, 1534–1540 (2015). https://doi.org/10.1007/s10593-014-1621-1
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DOI: https://doi.org/10.1007/s10593-014-1621-1