Carbonyl olefin metathesis

The metathesis carbon-carbon bond forming reactions mediated by transition metal catalysts (all variants of olefin metathesis, metathesis and metathesis polymerization of alkynes, sigma-bond metathesis, etc.) are powerful tools in organic synthesis. The carbonyl olefin metathesis is a new reaction, which is carried out successfully only in the particular case where the two functional groups are in one molecule and are conjugated. The result is a substituted polyacetylene. Proper catalytic systems for implementation of this reaction in the case where the two functional groups are not conjugated are not yet available. In case such system would be found the carbonyl olefin metathesis will become an alternative to the existing carboncarbon double bond forming reactions, especially to the carbonyl olefination reactions.