Copper‐Catalyzed Synthesis of 2H‐Thiopyran Derivatives from Alkynes,Sulfonyl Azides,Carbon Disulfide,and Malononitrile |
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| Authors: | Issa Yavari Manijeh Nematpour Ziba Tavakoli |
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| Affiliation: | 1. Chemistry Department, Tarbiat Modares University, P.O. Box 14115‐175, Tehran, Iran, (phone: +98‐21‐82883465;2. fax: +98‐21‐82883455);3. Department of Chemistry, Islamic Azad University, Science and Research Branch, Ponak, Tehran, Iran |
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| Abstract: | A one‐pot synthesis of functionalized thiopyran derivatives via a Cu‐catalyzed multicomponent reaction of sulfonyl azides, arylacetylenes and dipotassium 2,2‐dicyanoethylene‐1,1‐dithiolate, generated from malononitrile and CS2, has been developed. When alkylacetylenes were used as the terminal alkynes, N‐(alkanethioyl)‐N‐(2,2‐dicyanoethanethioyl)methanesulfonamides were obtained in good yields. |
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| Keywords: | Thiopyrans Malononitrile Copper iodide Sulfonyl azides Ketenimines Catalysis Multicomponent reactions |
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