Organic derivatives of rhenium oxides and their preparation and use for the metathesis of olefins

摘要

The invention relates to a process for the metathesis of olefins which comprises reacting an olefin of the formula YCZ=CZ-(CX2)nR2 (II) wherein n is an integer from 1 to 28, X represents H or F, Y represents H or alkyl having from 1 to 10 carbon atoms and Z represents H or a non-aromatic hydrocarbon group having from 1 to 6 carbon atoms and R2 represents H, alkyl, halogen, COOR3 or OR4, wherein R3and R4 represent alkyl having from 1 to 15 carbon atoms or phenyl which is unsubstituted or contains from 1 to 3 substituents or wherein R4 is trialkylsilyl R5Si, wherein R5 represents alkyl having from 1 to 5 carbon atoms, at a catalyst comprising an oxidic carrier charged with a rhenium compound as defined hereinbefore.