## Abstract The ^1^H and ^13^C NMR spectra of 2,4,6,8‐tetraaryl‐3,7‐diazabicyclo[3.3.1]nonan‐9‐ones (1–2), oximes (3–8) and __O__‐benzyl oximes (9–12) were recorded. The chemical shifts were unambiguously assigned using 1D and 2D NMR spectral data. The results clearly indicate that the compounds ex
A 1H and 13C NMR study of 4,8,9,10-tetraaryl-1,3-diazatricyclo[3.3.1.13,7]decan-6-ones
✍ Scribed by V. Vijayakumar; M. Sundaravadivelu; S. Perumal; A. Lycka
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 85 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.885
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
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.
📜 SIMILAR VOLUMES
## Abstract A study of the ^1^H and ^13^C NMR spectra of a series of __E,E__‐ and __Z,E__‐isomers of 3‐(arylpropenylidene)isobenzofuran‐1 (3__H__)‐ones [1a–d and 2a–d, respectively] was carried out. The __E,E__‐ and __Z,E__‐isomers 1a–d and 2a–d were recognized by the local anisotropy effect of the
## Abstract The ^1^H and ^13^C NMR data for 3‐azabicyclo[3.3.1]nonanes with OH and OMe substituents at C‐6 and C‐9 were measured using 1D (DEPT) and 2D (COSY, HSQC, HMBC, NOESY) experiments. Comparison of this NMR data illustrates the effects of stereochemistry and substitution at these positions.
## Abstract Ten new 1,2,4‐triazolo[3,4‐__b__]‐1,3,4‐thiadiazole derivatives were synthesized and their NMR spectra were analyzed by 1D and 2D NMR techniques (gCOSY, gHMBC, gHMQC). Copyright © 2001 John Wiley & Sons, Ltd.
The complete assignments of the 13C NMR resonances for eight tetrahydrothiazolo [3,2-d] [1,4] benzodiazepin-3(2H)-ones are reported. The data obtained account for a conformational rigidity of the heptatomic ring as a consequence of the annelation of the thiazolidinone nucleus. KEY WORDS '3C NMR Tetr