Pyridines. XI1 ‐ Acidité Relative Des Hydrogènes Des Méthyles de La S‐Collidine Dans L'Éther Diéthylique et L'Ammoniac Liquide

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1984 English Publisher:WileyJournal:Bulletin des Sociétés Chimiques Belges, volume 93, pages 47-53 (issn: 0037-9646, eissn: 0037-9646,

Copyright policy )

Authors: Paul‐Louis Compagnon; Tan Kimny; Odette Compagnon;

doi: 10.1002/bscb.19840930107

Pyridines. XI1 ‐ Acidité Relative Des Hydrogènes Des Méthyles de La S‐Collidine Dans L'Éther Diéthylique et L'Ammoniac Liquide

- Summary
- Related research
  (1)
- Metrics

Abstract

AbstractThe adicity of methyl bonded to pyridine nucleus of the s‐collidine depends on the solvent and the counterion nature. With Li+ or Na+ cations in Et2O, we have observed the decreasing acidity order: NH3 > Me‐2 > o‐tolunitrile > Me‐4; with Li+ or Na+ in liquid NH3: o‐tolunitrile > Me‐4 > NH3 > Me‐2. On the other hand, with K+ in Et2O or in liquid NH3: Me‐4 Me‐2 > NH3. An estimate for the pKa value of the s‐collidine (4‐methyl group) is ∼︁∼29 at –33°C in liquid NH3, with Na+ as counterion.

Related Organizations

UNIVERSITE BOURGOGNE EUROPE
France

1 Research products, page 1 of 1

Simplified Method for the Purification of S-Collidine
1974IsAmongTopNSimilarDocuments

Impact byBIP!

	selected citations These citations are derived from selected sources. 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).	1
	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.	Average
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average