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Synthesis 1991; 1991(12): 1151-1152
DOI: 10.1055/s-1991-28408
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A Novel Butatriene Synthesis

Rainer Herges* , Christoph Hoock
  • *Institut für Organische Chemie, Universität Erlangen-Nürnberg, Henkestr. 42, D-8520 Erlangen, Germany
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Publikationsdatum:
29. April 2002 (online)

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Reaction of potassium trithiocarbonate with 1,4-dichloro-, 1,4-bis(tosyloxy)- or 1,4-dibromo-2-butyne (1a-c) affords 4-vinylidene-1,3-dithiolane-2-thione (2) in excellent yields. The trithiocarbonate 2 is desulfurized with 1,3-dimethyl-2-phenyl-1,3,2-diazaphospholidine (3) to give butatriene (4) under very mild conditions