Cis-2-pentene metathesis has been studied with the catalyst system WBr5/C2H5AlCl2. At a given concentration of WBr5 there is no metathesis below a limiting concentration of C2H5AlCl2. At this value only metathesis occurs whereas above this limit, oligomerization is observed. The results suggest that the formation of the active site for metathesis produces a strong Lewis acid responsible for oligomerization. The alkylation of WBr5 by C2H5AlCl2 may be the origin of both types of sites.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry