Acidity of diethyl malonate

For weakly coordinating potassium K+ counter-ions, the acidity of diethyl malonate (24) (in DMSO) increased by increasing the fraction of ion pairing, as shown in Table 1 for three counter-ions in DMSO solution (Table 1). This trend also continued by increasing the coordinating ability of the metal counter-ions from sodium to lithium counterions. From this study, it appears the ( ,W)-confoimer (26 ) is more preferred over the (Z,U)-conformer (26) as the repulsion between the C—O bonds is more energetically unfavourable than chelate formation might be favourable. 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ ]

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