Configuration and conformation of acyclic keto diesters
✍ Scribed by Kingsbury, Charles A.; Hutton, Ronald F.; Durham, Dana
- Book ID
- 126236167
- Publisher
- American Chemical Society
- Year
- 1978
- Tongue
- English
- Weight
- 913 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0022-3263
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## Abstract The conformational analysis and the assignment of relative configurations [(__RR__, __SS__) and (__RS__, __SR__)] to the dia‐stereomeric racemates of two acyclic ketones with two asymmetric carbons, ±‐2,2,7,7‐tetramethyl‐5,6‐diphenyloctan‐3‐one and ±‐5,5‐dimethyl‐1,3,4‐triphenylhexan‐1‐
## Abstract ^13^C NMR (CMR) spectra of a number of di‐ and trisubstituted ethylenes have been measured. Very consistent values are found for the differential shieldings of allylic carbons in a number of linear, (Z)‐ and (E)‐disubstituted ethylenes. The discrepancies between the several structural e