Copper‐Catalyzed Synthesis of Pentasubstituted Pyridines from N‐Sulfonyl Ketenimines, 1,1,3,3‐Tetramethylguanidine,and Acetylene Dicarboxylates |
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| Authors: | Issa Yavari Azam Sheikhi Manijeh Nematpour Zohreh Taheri |
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| Institution: | 1. Department of Chemistry, Tarbiat Modares University, P.O. Box 14115‐175, Tehran, Iran, (phone: +98‐21‐82883465;2. fax: +98‐21‐82883455) |
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| Abstract: | Regioselective synthesis of pentasubstituted pyridines has been developed in moderate‐to‐good yields by the reaction of sulfonyl azides, alkynes, and a dialkyl acetylenedicarboxylate? tetramethylguanidine adduct catalyzed by CuI in MeCN at room temperature. |
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| Keywords: | Pyridines penta‐substituted Ethanimine N‐sulfonyl‐ Copper(I) iodide Acetylenedicarboxylates Guanidine 1 1 3 3‐tetramethyl‐ |
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