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Configurational and conformational studies of N , N ‐dimethylpiperidinium derivatives by 13 C and 1 H NMR spectroscopy
Author(s) -
Casy A. F.,
Ogungbamila F. O.
Publication year - 1982
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270180312
Subject(s) - chemistry , nuclear magnetic resonance spectroscopy , piperidine , nmr spectra database , spectral line , chemical shift , spectroscopy , carbon 13 nmr satellite , carbon 13 nmr , stereochemistry , salt (chemistry) , computational chemistry , crystallography , fluorine 19 nmr , physics , quantum mechanics , astronomy
The 13 C and 1 H NMR spectra of a series of methiodides of mono‐ and di‐C‐methyl derivatives of 1‐methyl‐4‐phenyl‐4‐piperidinols are reported and chemical shift data analysed in terms of configurations and conformations of isomeric sets. Results demondtrate the value of quaternary salt NMR data as an aid to configurational assignment, and the evaluation of non‐bonded interactions governing conformational equilibria in piperidine derivatives.