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Basicity of Pyridine and Some Substituted Pyridines in Ionic Liquids

descriptionPublicationkeyboard_double_arrow_right Article 03 May 2010 English Publisher:American Chemical Society (ACS)Journal:The Journal of Organic Chemistry, volume 75, pages 3,912-3,915 (issn: 0022-3263, eissn: 1520-6904, Copyright policy )
Authors: ANGELINI, Guido; DE MARIA, Paolo; Chiappe C; FONTANA, Antonella; Pierini M; SIANI, Gabriella;

doi: 10.1021/jo100570x

pmid: 20438098

handle: 11564/172115 , 11573/44401 , 11568/137558

Basicity of Pyridine and Some Substituted Pyridines in Ionic Liquids

Abstract

The equilibrium constants for ion pair formation of some pyridines have been evaluated by spectrophotometric titration with trifluoroacetic acid in different ionic liquids. The basicity order is the same in ionic liquids and in water. The substituent effect on the equilibrium constant has been discussed in terms of the Hammett equation. Pyridine basicity appears to be less sensitive to the substituent effect in ionic liquids than in water.

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Keywords

Pyridines, Titrimetry, Ionic Liquids, Trifluoroacetic Acid, Hydrogen-Ion Concentration

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    		 23
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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
23
Average
Average
Top 10%
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