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Cyclisation reaction between 3-methylquinoxaline-2-thione and benzaldehydes into 3-benzyl-2-aryl-thieno[2,3-b]quinoxaline promoted by Brønsted acids

Abstract : 2,3-Disubstituted thieno[2,3-b]quinoxaline derivatives have been synthetized through the condensation of commercially available benzaldehydes with 3-methylquinoxaline-2-thione in EtOH using Brønsted acids, namely sulfuric or hydrochloric acids. A wide range of substituted benzaldehydes has been used, allowing the formation of 3-(substituted)benzyl-2-arylthieno[2,3-b]quinoxalines in high yields in only one step
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01188181
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Submitted on : Friday, August 28, 2015 - 3:22:53 PM
Last modification on : Thursday, March 5, 2020 - 2:03:52 PM

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Besma Saoudi, Abderrahmane Teniou, Adbelmadjid Debache, Thierry Roisnel, Jean-François Soulé, et al.. Cyclisation reaction between 3-methylquinoxaline-2-thione and benzaldehydes into 3-benzyl-2-aryl-thieno[2,3-b]quinoxaline promoted by Brønsted acids. Comptes Rendus Chimie, Elsevier Masson, 2015, 18 (8), pp.808--815. ⟨10.1016/j.crci.2015.06.003⟩. ⟨hal-01188181⟩

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