Abstract
The reaction of acetylenic esters with ethyl bromopyruvate in the presence of tetramethylthiourea led to highly functionalized thiophenes in excellent yields.
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Yavari I, Sabbaghan M, Hossaini Z (2006) Synlett:2501
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Correspondence: Issa Yavari, Chemistry Department, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
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Yavari, I., Hossaini, Z., Seyfi, S. et al. Efficient synthesis of highly substituted thiophenes from acetylenic esters, ethyl bromopyruvate, and tetramethylthiourea. Monatsh Chem 139, 1257–1259 (2008). https://doi.org/10.1007/s00706-008-0918-0
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DOI: https://doi.org/10.1007/s00706-008-0918-0