New conditions for the generation of dianions of carboxylic acids

Autor: Brun, Eva M., Casades, Isabel, Gil, Salvador, Mestres, Ramón, Parra, Margarita
Zdroj: Tetrahedron Letters; January 1998, Vol. 39 Issue: 30 p5443-5446, 4p
Abstrakt: Lithium carboxylic acid enediolates are generated efficiently using lithium amides prepared from thienyllithium or butyllithium and either diethylamine, piperazine, N,N′-dibenzylethylenediamine, N-benzylpiperazine or 1,3,3-trimethyl-6-azabicyclo[3.2.1]octane, even in catalytic amounts.
Databáze: Supplemental Index