The proton and carbon spectra of the title compounds were completely assigned by the use of 2D NMR techniques including 2D INADEQUATE. Contradictory assignments from the literature were clariΓed and incomplete data completed. The validity of the assignments of proton spectra was checked by computer
1H and 13C NMR spectra of cis and trans phytoene isomers
β Scribed by P Granger; B Maudinas; R Herber; J Villoutreix
- Publisher
- Elsevier Science
- Year
- 1973
- Weight
- 357 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In aqueous solutions, 13C-and 'H-nmr studies show that the percentage of trans conformation of proline oligomers +H\*N Pro-(Pro),-CO; increases substantially from n = 1 (65% trans) t o n = 2 (90% trans). The relatively low percentage of trans structure for the dimer ( n = 1) very likely is caused by
The 'H and "C NMR chemical shift assignments of trans-and cis-10-chlorodecal-2-ones were based on 2D COSY and HETCOR experiments. The spectra were measured either in CDCI, or in C,D, to optimize the spectral dispersion (ASIS effect). Selective spin decoupling experiments were also performed.
A series of N-hydroxymethylamides, RCONR'CH,OH, and their 0-methyl and 0-acetyl derivatives, have been studied by -C and 'H magnetic resonance spectroscopy. Signals have been assigned to the E and %isomers on the bask of the analysis of the fully coupled spectra, and by comparison of the chemical sh
0 'H-and 'W-NMR data and spectral assignments are reported for fenobam using noise modulated gated, single frequency off resonance, and single frequency selective proton decoupling techniques. Keyphrases 0 Fenobam-'H-and 13C-NMR spectroscopic analysis 0 'H-and 'T-NMR spectroscopy-analysis of fenoba
The 1 H and 13 C NMR chemical shift assignments of 10-substituted decal-2-ones, cis (H, CH 3 and CO 2 CH 3 ) and trans (H, CH 3 , OH and CO 2 C 2 H 5 ) were based on 2D COSY and HETCOR experiments, supported by selective spin decoupling experiments. The discrimination between the cis and the trans c