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Synthesis 1997; 1997(1): 50-52
DOI: 10.1055/s-1997-1496
short paper
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Highly Regioselective Monothionation of Squaric and Semisquaric Acid Derivatives

Martin Müller1 , Matthew J. Heileman2 , Harold W. Moore3 , Ernst Schaumann4 , Gunadi Adiwidjaja5
  • 1Institut für Organische Chemie, Technische Universität Clausthal, Leibnizstraße 6, D-38678 Clausthal-Zellerfeld, Germany
  • 2Department of Chemistry, University of California-Irvine, Irvine, CA 92717, USA
  • 3Department of Chemistry, University of California-Irvine, Irvine, CA 92717, USA, Fax +1(714)8242210; E-mail hal.moore@uci.edu
  • 4Institut für Organische Chemie, Technische Universität Clausthal, Leibnizstraße 6, D-38678 Clausthal-Zellerfeld, Germany, Fax +49(5323)722858; E-mail: ernst.schaumann@tu-clausthal.de
  • 5Mineralogisch-Petrographisches Institut, Universität Hamburg, Grindelallee 48, D-20146 Hamburg, Germany
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Publikationsdatum:
31. Dezember 2000 (online)

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An efficient synthesis of 4-thioxocyclobut-2-enones by the action of 0.5 molar equivalents of Lawesson’s reagent on the corresponding diones is reported.

thionation - regioselectivity - cyclobutenones - Lawesson’s reagent