6-nitrohexene-1 (6-NH-1) undergoes metathesis in the presence of 16 wt.% Re2O7/Al2O3/R4M and 3 wt.% Re2O7/Al2O3-SiO2/R4M (where R = methyl, ethyl; M = Sn or Ph) catalysts. The system containing alumina as a support is more active. Tetramethyltin (TMT) and tetraethyllead (TEL) used as co-catalysts, exhibited similar activating effect which was greater than with tetraethyltin (TET). The best results were obtained when the Re:Sn(Pb) and 6-NH-1:Re ratios were equal, respectively, to 1:1 and 10:1. The alumina-silica supported catalysts activity can be enhanced by doping the support with very small amounts of molybdenum ions.