Abstract The metathesis reactions of methyl 10-undecenoate, methyl oleate and oleyl acetate have been carried out using WCl 6 and WOCl 4 as primarycatalysts and SnMe 4, PbMe 4, Cp 2 TiMe 2, and Cp 2 ZrMe 2 as cocatalysts. The catalyst system WOCl 4/Cp 2 TiMe 2 was found to be very active for the metathesis of the unsaturated esters and is somewhat better than the system WCl 6/SnMe 4. Diethyl 9-octadecene-1, 18-dioate, ...
