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Synthesis 1992; 1992(11): 1071-1072
DOI: 10.1055/s-1992-26303
short paper
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[2 +4] Cycloaddition to Tetrathiafulvalene (TTF): A New Route to Multisulfur TTF Derivatives

V. Y. Khodorkovsky* , J. Y. Becker, J. Bernstein
  • *Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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Publication Date:
17 September 2002 (online)

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[2+4] Cycloaddition of oligomeric 1,3-dithiole-2,4,5-trithione (2) and tetrathiafulvalene (TTF) leads to the formation of the new cycloadduct 6-(1,3-dithiol-2-ylidene)-4a,7a-dihydro-2-thioxobis [1,3]dithiolo[4,5-b: 4′,5′-e][1,4]dithiin (3); its oxidation or reaction with a base and subsequent methylation afford 6-(1,3-dithiol-2-ylidene) -2-thioxobis[1,3]dithiolo[4,5-b:4′,5′-e][1,4]dithiin (4) and 4-[2-(1,3-dithiol-2-ylidene)-1,3-dithiol-4-ylthio]-5-methylthio-1, 3-dithiole-2-thione (5), respectively.

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