Metal enolato complexes

The synthesis of metal enolato complexes will be presented in sections according to the type of reagent supplying the oxygen atom of the enolato ligand and in each section the different types of metals will be considered separately. 

The syntheses of mixed Na/Mg metal enolato complexes 25-27 (RO = 0(=CH2)Mes) have been reported by mixing the metal alkyl reagents NaBu-w and Mg(w-Bu)2 in the desired stoichiometry with the required amount of AcMes and tmeda . 

Carbon monoxide and its metal complexes are of widespread use as the source of enolato ligands in the synthesis of transition metal enolato complexes. 

Cleavage of thf by LiR occurs with formation of ethylene and the metal enolate of acetaldehyde (ethenolate), the simplest enolate anion. For example, Li(OCH=CH2) results from the reaction of LiR (R = n-Bu , t-Bu ) with thf and it has been used in the synthesis of other metal enolato complexes. 

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