Abstract Olefin metathesis of allylacetone usually proceeds with little conversion. After the carbonyl group is protected by (i) silylation with ClSi (CH 3) 3 to give silylenolethers or (ii) by acetalisation with 1, 2-ethanediol to the 1, 3-dioxane derivative the reactivity increases significantly in the homometathesis reaction as well as in the cometathesis with mono- olefins. Using Re 2 O 7/Al 2 O 3+ Sn (CH 3) 4 as catalyst the metathesis of allylacetone as ...
