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 PdI2 in conjunction with KI (KI:PdI2 molar ratio = 10). The catalyst could be made recyclable employing an ionic liquid, such as BmimBF4, as the solvent under suitable conditions.

Synthesis of substituted thiophenes by palladium-catalyzed heterocyclodehydration of 1-mercapto-3-yn-2-ols in conventional and nonconventional solvents

GABRIELE, Bartolo;Mancuso R;VELTRI, Lucia;
2012

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 PdI2 in conjunction with KI (KI:PdI2 molar ratio = 10). The catalyst could be made recyclable employing an ionic liquid, such as BmimBF4, as the solvent under suitable conditions.
Ionic Liquids; Palladium; Thiophenes
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/134330
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