## Abstract High field high resolution ^13^C NMR spectroscopy allows the quantitative determination of a mixture of the four diastereomers in racemic α‐tocopherol.
Quantitative analysis and determination of the enantiomeric purity of glycerides by 13C NMR spectroscopy. Application to the lipase-catalysed transesterification of triacylglycerides
✍ Scribed by Claude Rabiller; Françoise Maze
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 299 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
13C NMR spectroscopy can be used for the quantitative analysis of mixtures of glycerides and the enantiomeric purity can be determined by using Eu(hfbc),-d reagent. This technique was applied to the study of the reaction mixture obtained from the transesterification of tributyrin catalysed by My-lipase (Can&& cylindracea). A 'preference' of this lipase for the pro-R ester function of tributyrin is demonstrated.
📜 SIMILAR VOLUMES
Solid-state 13 C NMR spectroscopy and dipolar dephasing technique was used to determine the extent of condensation in various technical lignins. The accuracy of dipolar dephasing method was first investigated with the aid of some lignin model compounds and two various methods to determine the degree
## Abstract The ^1^H, ^13^C and ^29^Si NMR spectral characteristics of β‐silylated silyl enol ethers were determined. ^__n__^__J__(Si, H) measurements (2 < __n__ < 4) were achieved from selective polarization transfer experiments with selective decoupling during acquisition. ^1^H,^29^Si two‐dimensi