New conditions for the generation of dianions of carboxylic acids
作者:Eva M. Brun、Isabel Casades、Salvador Gil、Ramón Mestres、Margarita Parra
DOI:10.1016/s0040-4039(98)01050-8
日期:1998.7
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.