15N NMR Spectroscope of Pyrazolines-2 and Their Salts
- 1 January 1987
- journal article
- research article
- Published by Taylor & Francis in Spectroscopy Letters
- Vol. 20 (2) , 149-157
- https://doi.org/10.1080/00387018708081535
Abstract
15N NMR Spectroscopy is one of the most powerful tools to study the structure of organic molecules.1–3 δ2 -pyrazolines 1 are heterocyclic hydrazones, which as a result of their cyclic structure, are stable in acidic media. Thus, their protonation has been studied by 1H and 13C NMR spectroscopies.4,5 Pyrazolines are protonated and quaternarized at N1 2 and 3. It is possible to obtain the isomeric quaternary salts 4 by C-protonation of δ3 -pyrazolines.6Keywords
This publication has 8 references indexed in Scilit:
- 13C NMR study of N2-alkyl or aryl pyrazolinium saltsMagnetic Resonance in Chemistry, 1986
- 15N‐NMR Spectroscopy—New Methods and Applications [New Analytical Methods (28)]Angewandte Chemie International Edition in English, 1986
- Nitrogen‐NMR Studies on the Protonation of 2‐(Aminomethyl)pyridine and Tris[(2‐pyridyl)methyl]amineHelvetica Chimica Acta, 1986
- Nitrogen NMR and molecular interationsProceedings of the Indian Academy of Sciences - Section A, 1985
- Pyrazoles and their Benzo DerivativesPublished by Elsevier ,1984
- 15N-NMR SpectroscopyPublished by Springer Nature ,1981
- Nitrogen-15 nuclear magnetic resonance spectroscopy. Pyridine N-oxides and quinoline N-oxidesMagnetic Resonance in Chemistry, 1979
- Enhancement of nuclear magnetic resonance signals by polarization transferJournal of the American Chemical Society, 1979