(1)H and (13)C NMR spectra of symmetric and asymmetric bis-spiropyrans, Series 1-3, were completely assigned. Especially, the (1)H assignment of asymmetric spiropyrans was achieved by utilizing (1)H-(1)H COSY and nOe experiments. All of the carbons in the dye molecules were investigated through a co
1H and 13C spectral assignment of symmetrical bis[(4-aminosubstituted)quinolinium] derivatives
✍ Scribed by Joaquín M. Campos; Rosario M. Sánchez-Martín; Olga Cruz-López; Ana Conejo-García; Miguel A. Gallo; Antonio Espinosa
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 106 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1659
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✦ Synopsis
1H and 13C NMR spectroscopic data of both the quinolinium ring and the spacers for 32 symmetrical bisquinolinium compounds were assigned by a combination of one- and two-dimensional experiments (DEPT, HMBC, HMQC). The compounds have electron-releasing groups at position 4 of the quinolinium ring, with several arylalkyl linkers such as the 3,3'-, 4,4'-bis(methylene)biphenyl and 4,4'-bis(methylene)bibenzyl moieties.
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## Abstract 2,3,8,9,10,11‐Hexahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐2,3,8,9,10,11‐hexahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐6‐hydroxy‐1,2,3,7a,8,9,10,11,11a,11b‐decahydro‐7__H__‐dibenzo[__de,h__]quinolin‐7‐one, 5‐methoxy‐5,6,8,9,10,11‐hexahydro‐4__H__‐dibenzo[__d