Abstract
The reaction of 2-thiophenecarbaldehyde with arene diazonium chlorides in the presence of CuCl2 catalyst gave 5-aryl-2-thiophenecarbaldehydes. Use of 4-nitrobenzene diazonium chloride in the reaction also gave the isomeric 3-(4-nitrophenyl)-2-thiophenecarbaldehyde. Condensation products of the 5-aryl-2-thiophenecarbaldehydes with cyanoacetic acid esters, cyanoacetamide, and with barbituric and dimethylbarbituric acids were prepared.
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Communication 16 in the series “Synthesis of heterocycles based on the products of arylation of unsaturated compounds”. For Communication 15 see [1].
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1166–1171, August, 2008.
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Obushak, M.D., Matiychuk, V.S. & Lytvyn, R.Z. Synthesis and reactions of 5-aryl-2-thiophenecarbaldehydes. Chem Heterocycl Comp 44, 936–940 (2008). https://doi.org/10.1007/s10593-008-0135-0
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DOI: https://doi.org/10.1007/s10593-008-0135-0