Because of the upsurge of interest in polychlorobuta-1,3-diene derivatives as uncommon contaminants in underground water, seven congeners, the three pentachloro-and four tetrachloro-[(Z)-and (E)-1,1,3,4tetrachloro-, 1,1,4,4-tetrachloro-and (Z,Z)-1,2,3,4-tetrachloro]buta-1,3-dienes, were synthesized
1H, 13C NMR, X-ray and conformational studies of new 1-alkyl-3-benzoyl-pyrazole and 1-alkyl-3-benzoyl-pyrazoline derivatives
✍ Scribed by Luisa C. López-Cara; M. Dora Carrión; M. Encarnación Camacho; Miguel A. Gallo; Antonio Espinosa; Duane Choquesillo-Lazarte; Josefa M. Gonzalez-Pérez; Antonio Entrena Guadix
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 240 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2256
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✦ Synopsis
Abstract
The ^1^H and ^13^C NMR resonances of 22 1‐alkyl‐pyrazole and 25 1‐alkyl‐pyrazoline derivatives were assigned completely using the concerted application of one‐ and two‐dimensional experiments (DEPT, gs‐HMQC and gs‐HMBC). Nuclear Overhauser enhancement (NOE) effects, conformational analysis and X‐ray crystallography confirm the preferred conformation of those compounds. Copyright © 2008 John Wiley & Sons, Ltd.
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