H. J. Jakobsen, E. H. Larsen, S. Lawesson
Sep 2, 2010
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Journal
Recueil des Travaux Chimiques des Pays-Bas
Abstract
2-Hydroxythiophen exists at room temperature mainly in the tautomeric form 2(5H)-thiophenone13 and is conveniently prepared3 by splitting 2-thienyl t-butyl ether by heating it with catalytic amounts of p-toluenesulphonic acid at about 150°. 2(5H)-Thiophenone, an α,β-unsaturated cyclic thioester (thiolactone), has been shown to undergo Michael addition with different types of so-called active methylene compounds.