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A 1 H and 13 C NMR study of 4,8,9,10‐tetraaryl‐1,3‐diazatricyclo[3.3.1.1 3,7 ]decan‐6‐ones
Author(s) -
Vijayakumar V.,
Sundaravadivelu M.,
Perumal S.,
Lycka A.
Publication year - 2001
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.885
Subject(s) - chemistry , ring (chemistry) , chemical shift , two dimensional nuclear magnetic resonance spectroscopy , aryl , stereochemistry , carbon 13 nmr , nmr spectra database , nuclear magnetic resonance spectroscopy , crystallography , carbon 13 nmr satellite , spectral line , fluorine 19 nmr , organic chemistry , alkyl , physics , astronomy
The 1 H and 13 C NMR spectra of 4,8,9,10‐tetraaryl‐1,3‐diazatricyclo[3.3.1.13, 7]decan‐6‐ones were measured at 400 and 500 and at 100 and 125 MHz, respectively. The chemical shifts were assigned unambiguously using one‐ and two‐dimensional (H,H‐COSY, C,H‐COSY, NOESY, ROESY and HMBC) NMR spectroscopic data. 1D‐INADEQUATE data also provide an independent assignment of the signals of the carbons of the heterocyclic rings. These results clearly indicate the axial orientation of two aryl groups in one piperidone ring and the equatorial orientation, of the other two aryl groups in another ring. Copyright © 2001 John Wiley & Sons, Ltd.