Protonation of sodium phenylethynyltellurolate with trifluoroacetic acid afforded trans-2,4-dibenzylidine-1,3-ditelluretan as the minor product, and cis- and trans- 2,6-diphenyl-1,4-ditellurafulvenes (4) and (5) as the major products which latter represent the first examples of 1,3-ditelluroles.
M. V. Lakshmikantham, M. P. Cava, M. Albeck, L. Engman, F. Wudl and E. Aharon-Shalom, J. Chem. Soc., Chem. Commun., 1981, 828 DOI: 10.1039/C39810000828
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