- Abstract:
-
The stereochemistry of conformationally mobile five-membered rings is often hard to assign from NMR data, and [2,2']bifuranyl systems are even more challenging. GIAO (13)C NMR chemical shifts have been calculated for a series of [2,2']bifuranyl and pyranopyran species, taking into account their conformational flexibility using weighted averages of the data for all low energy conformers. We show that calculation of (13)C NMR chemical shifts using the geometries obtained using molecular mechani...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1021/jo8003138
-
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- Journal:
- The Journal of organic chemistry
- Volume:
- 73
- Issue:
- 11
- Pages:
- 4053-4062
- Publication date:
- 2008-06-05
- DOI:
- EISSN:
-
1520-6904
- ISSN:
-
0022-3263
- URN:
-
uuid:49ea621a-5a09-4388-9356-e37821d68b51
- Source identifiers:
-
116798
- Local pid:
- pubs:116798
- Language:
- English
- Copyright date:
- 2008
Journal article
Stereostructure assignment of flexible five-membered rings by GIAO 13C NMR calculations: prediction of the stereochemistry of elatenyne.
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