New conditions for the generation of dianions of carboxylic acids
EM Brun, I Casades, S Gil, R Mestres, M Parra
Index: Brun, Eva M.; Casades, Isabel; Gil, Salvador; Mestres, Ramon; Parra, Margarita Tetrahedron Letters, 1998 , vol. 39, # 30 p. 5443 - 5446
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Citation Number: 26
Abstract
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.
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