Enolates of /3-dicarbonyl compounds

Apart from their fundamental role in sulfur ylide chemistry, sulfonium salts have found applications as soft electrophiles. In alkylation of ambident nucleophiles such as the enolates of [3-dicarbonyl compounds they led to selective C-alkylation [205],... 

Conjugate addition. Schlessinger et have reported a general synthesis of 1,4-dicarbonyl compounds based on utilization of (1) as a 2-carbon Michael acceptor. Michael additions were realized with enamines, sodium enolates of /3-dicarbonyl compounds, and lithium enolates of esters. The products can be converted into aldehydes by hydrolysis in aqueous acetonitrile with perchloric acid. 

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