## Abstract The carbon‐13 shifts of C‐1, C‐2 and C‐3 are determined in a series of 1‐cyclohexen‐3‐ones substituted in position 1. Linear relationships are demonstrated between the substituent chemical shifts of corresponding carbons in substituted ethylenes, butadienes, α‐enones and benzenes. The s
Note on the relative magnitudes of substituent effects on 1H-chemical shifts in olefinic and aromatic systems
✍ Scribed by Jane Beeby; Linda Drake; R. Duffin; S. Sternhell; E. Pretsch; W. Simon
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 228 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A regular relationship was noted between the influence of substituents on the chemical shifts of the ortho protons in mono‐substituted benzenes and the influence of the same substituents on the protons in the cis relationship in monosubstituted ethylenes.
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## Abstract A principal component analysis is applied to α‐monosubstituted ethyl acetates (YCH~2~CO~2~Et), where the observed chemical shifts for the α‐carbon atom, the carbonyl carbon, and the α‐hydrogen atoms are correlated with theoretically derived molecular properties, i.e. the partial charges