Journal of the Brazilian Chemical Society
On-line version ISSN 1678-4790
ALVES, Diego et al. Copper catalyzed cross-coupling reactions of diaryl ditellurides with potassium aryltrifluoroborate salts. J. Braz. Chem. Soc. [online]. 2009, vol.20, n.5, pp. 988-992. ISSN 1678-4790. http://dx.doi.org/10.1590/S0103-50532009000500025.
We present here results of the cross-coupling reaction of diaryl ditellurides with potassium aryltrifluoroborate salts using a catalytic amount of Cu(OAc)2 and bypiridine in DMSO/H2O under air atmosphere. This cross-coupling reaction is general and was performed with diaryl ditellurides and potassium aryltrifluoroborate salts bearing electron-withdrawing, electron-donating and neutral substituents, affording the corresponding unsymmetrical diaryl tellurides in good to excellent yields.
Keywords : tellurium; trifluoroborate salts; copper catalysis.