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- W1566654803 abstract "An efficient, straightforward, and highly chemoselective strategy has been devised for the synthesis of a broad range of indeno[1,2-b]thiophenes through the annulation of α-enolic dithioesters with ninhydrin under solvent-free conditions. The advantages of this nucleophilic domino substitution/cyclization sequence are highlighted by the use of inexpensive and readily available FeCl3·6H2O as the catalyst, the operational simplicity, a short reaction time, its functional-group tolerance, and the concomitant formation of the C–C and C–S bonds to give a thiophene ring in a single operation. The method is economic with regard to the number of steps as well as to being a one-pot carbon-efficient process that is devoid of toxic reagents and solvents. Importantly, one of the newly synthesized indeno[1,2-b]thiophene compounds exhibited a high selectivity and sensitivity towards the Fe3+ ion over other metal ions." @default.
- W1566654803 created "2016-06-24" @default.
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- W1566654803 date "2014-07-21" @default.
- W1566654803 modified "2023-09-26" @default.
- W1566654803 title "Iron-Promoted Domino Annulation of α-Enolic Dithioesters with Ninhydrin under Solvent-Free Conditions: Chemoselective Direct Access to Indeno[1,2-<i>b</i>]thiophenes" @default.
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- W1566654803 doi "https://doi.org/10.1002/ejoc.201402276" @default.
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