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Title: Synthesis of substituted thiophenes by palladium-catalyzed heterocyclodehydration of 1-mercapto-3-yn-2-ols in conventional and nonconventional solvents. Author: Gabriele B, Mancuso R, Veltri L, Maltese V, Salerno G. Journal: J Org Chem; 2012 Nov 02; 77(21):9905-9. PubMed ID: 23043424. Abstract: A variety of readily available 1-mercapto-3-yn-2-ols 5 were conveniently converted into the corresponding thiophenes 6 in good to high yields in MeOH as the solvent at 50-100 °C in the presence of catalytic amounts (1-2%) of PdI(2) in conjunction with KI (KI:PdI(2) molar ratio = 10). The catalyst could be made recyclable employing an ionic liquid, such as BmimBF(4), as the solvent under suitable conditions.[Abstract] [Full Text] [Related] [New Search]