Olefination of Esters

Scheme 7.38). No olefination of esters such as ethyl benzoate could be achieved with this reagent, not even by performing the reaction in the presence of pyridine as a base [234],... 

Figure 5.11. Olefination of esters using the Tebbe reagent [109,110].

Tsai, H.-J., and Burton, D.J., Synthesis of phenyl and ester substimted vinyl fluorides via reduction and olefination of esters, Phosphorus, Sulfur Silicon Relat. Elem., 140, 135, 1998. 

The utility of simple enamines in C-C bond-forming reactions has prompted continuing efforts directed towards improved methods of synthesis for more highly functionalised derivatives. The Tebbe reagent (6) has found use in the olefination of esters and recently... 

The intramolecular carbonyl olefination of esters bearing a thioacetal moiety is also applicable to the synthesis of cyclic vinyl ethers. The formation of simple monocyclic vinyl ethers by the treatment of co,(B-bis(phenylthio)alkyl alkanoates with 44 is rather complicated owing to the concomitant formation of oligomers... 

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