## Abstract The analysis of the ^13^C NMR chemical shifts of 16 substituted 2‐phenylthiazolidines shows that the 1,3‐thiazolid‐2‐yl group exerts a deshielding effect at the __ipso__ carbon (C‐1′) and shielding effects at the __ortho__ and __para__ positions of the benzene ring (C‐2′ and C‐4′), and
Interpretation of substituent-induced chemical shifts in 13C NMR spectra of 2-substituted norbornadienes. Influence of homoconjugation
✍ Scribed by Hanna Krawczyk; Halina Szatylowicz; Adam Gryff-Keller
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 564 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The complete ^13^C NMR analysis of 3‐substituted camphors with F, Cl, Br, I, OH, OMe, SMe, NHMe, NMe~2~ and Me substituents at __endo__ and __exo__ positions, and also the corresponding ‘oxo’ and dichloro derivatives, were obtained by 1D and 2D NMR techniques. The resulting substituent‐
## Abstract Carbon‐13 chemical shifts for __N__‐benzylidenebenzylamines are affected by substituents up to eleven bonds away from the substituent group. The data correlate well with Hammett constants.
The I3C NMR spectra for eight 2-(4'-substituted)phenylisatogens were determined at 30°C in CDCI, . Analysis of the ipso-carbon SCS values was carried out using the well known DSP and DSP-NLR models. Changes in the "C SCS values for the carbon atoms in the isatogen moiety suggest that a small degree
## 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