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Carbon-13 NMR investigation of the protonation and quaternization of azoloazines with a bridgehead nitrogen

✍ Scribed by Ronald J. Pugmire; James C. Smith; David M. Grant; Branko Stanovnik; Miha Tišler

Book ID
112123872
Publisher
Journal of Heterocyclic Chemistry
Year
1976
Tongue
English
Weight
345 KB
Volume
13
Category
Article
ISSN
0022-152X

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Diazanaphthalenes: A 13C NMR investigati
Diazanaphthalenes: A 13C NMR investigation on the site of protonation and pKa values
✍ Peter van de Weijer; Hans Thijsse; Douwe van der Meer 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 472 KB

## Abstract The pH dependence of the ^13^C chemical shifts (δ) of the diazanaphthalenes has been recorded. From this dependence the p__K__~__a__~ values have been determined using the Henderson‐Hasselbach equation. The change in ^13^C chemical shifts under the influence of nitrogen protonation (Δδ)