Thiol-mediated radical cyclization: regioselective formation of indole-annulated sulfur heterocycles by tandem cyclization |
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| Authors: | KC Majumdar P Debnath S Alam PK Maji |
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| Institution: | Department of Chemistry, University of Kalyani, Kalyani 741 235, West Bengal, India |
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| Abstract: | Indole-2-yl-prop-2-ynyl sulfides, under thiophenol-mediated alkenyl radical cyclization conditions, afforded exclusively 4-thiophenyl-2,3,4,9-tetrahydrothiopyrano2,3-b]indoles or 3-thiophenylmethyl-2,3,8-trihydrothieno2,3-b]indoles depending on the substituent at the indole nitrogen. |
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| Keywords: | Thiophenol Indoline-2-thione Tandem cyclization Regioselectivity |
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