Temperature and Solvent Effects on Nmr Chemical Shifts of Some Nitrogen and Sulphur Heterocycles

C. Palanivel, K. Suganya, C. Ramalingan and S. Kabilan

Department of Chemistry, Annamalia University, Annamalai Nagar - 608 002 India.

ABSTRACT:

The synthesis of 2,6-diarylpiperidines and the corresponding epimeric alcohols1-3 as well as the synthesis of tetrahydrothiopyran-4-one oxime derivatives4-6 have already been reported1-5. In the present investigation, the effect of temperature and solvent chemical shifts in NMR spectra of the above compounds are presented. For compounds 1-6, the 1H and 13CNMR spectra are recorded in DMSO and tie results are compared with that of the spectra in CDCI3. Coupling constants are calculated for three compounds (4-6). For compounds (1-3)C6D6 is a better solvent in recording the 13CNMR spectra. Dynamic NMR studies shows that all the compounds possess conformational homogenity.

KEYWORDS:

Diarylpiperidines; epimeric; alcohols; tetrahydrothiopyran

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Copy the following to cite this article: Palanivel C, Suganya K, Ramalingan C, Kabilan S. Temperature and Solvent Effects on Nmr Chemical Shifts of Some Nitrogen and Sulphur Heterocycles. Orient J Chem 2000;16(3).

Copy the following to cite this URL: Palanivel C, Suganya K, Ramalingan C, Kabilan S. Temperature and Solvent Effects on Nmr Chemical Shifts of Some Nitrogen and Sulphur Heterocycles. Orient J Chem 2000;16(3). Available from: http://www.orientjchem.org/?p=36123