An investigation of the utility of using n.m.r. lanthanide shift reagents for 13C assignments in selected aromatic ethers and ketones. A detailed description of the lanthanide induced shift ratio method for lanthanide shift reagent–substrate geometry analysis
✍ Scribed by Herman L. Ammon; Paul H. Mazzocchi; Elena J. Colicelli
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 860 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C and ^1^H spectra of a series of aromatic ketones, ethers and keto‐ethers were studied using the lanthanide shift reagent (LSR) Yb(fod)~3~ and the data analyzed using the lanthanide induced shift (LIS) ratio method. Studies were carried out on phenalenone, 6‐methoxyphenalenone, 1‐ and 2‐methoxynaphthalene, 1‐indanone, 5‐ and 6‐methoxy‐1‐indanone and flavone and the data obtained subjected to LSR‐substrate geometry analysis as a means of making ^13^C assignments. The utility and limitations of the LSR method for making ^13^C assignments is discussed and the LIS ratio method for LSR‐substrate geometry analysis is described in detail.