## Abstract ^13^C NMR Substituent chemical shift (SCS) increments have been determined for the carbonyl carbon of a variety of substituted benzaldehydes and acetophenones. The ^13^C NMR chemical shift of the carbonyl carbon can be predicted for many di‐ and trisubstituted benzaldehydes and acetophe
Increments for 1H and 13C NMR chemical shifts in areneboronic acids
✍ Scribed by Stefan Bruns; Volker Sinnwell; Jürgen Voss
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 90 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1163
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✦ Synopsis
Abstract
A series of areneboronic acids were studied by NMR spectroscopy. Increments for the ^1^H and ^13^C chemical shifts caused by the boronic acid substituent B(OH)~2~ in areneboronic acids were determined. Copyright © 2003 John Wiley & Sons, Ltd.
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The complete assignment of the 1H and 13C NMR spectra of eight thienyl-substituted chromenes was achieved by the concerted application of homonuclear (gs-COSY), 1H-detected heteronuclear one-bond (gs-HMQC) and long-range (gs-HMBC) gradientselected correlation experiments.
## Abstract ^13^C chemical shifts and ^31^P,^13^C coupling constants are reported for nine 1‐hydroxyalkylphosphonic and two additional phosphonic acids. The α‐substituent‐induced chemical shifts (α‐SCS) of the phosphonate group were calculated and their non‐additivity was observed. Good linear corr