## 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 diβ and trisubstituted benzaldehydes and acetophe
Carbonyl C13 chemical shifts in substituted benzaldehydes
β Scribed by A. Mathias
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- French
- Weight
- 582 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0040-4020
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## Abstract An analysis of ^17^O carbonyl chemical shifts of 50 substituted benzaldehydes leads to an empirical equation, Ξ΄~cal~(^17^O) = 564.0 + Ξ£Ξ__o__ + Ξ£Ξ__m__ + Ξ£Ξ__p__ + __C__, for calculating ^17^O chemical shifts. This equation is based on a linear regression analysis using 11 substituent p
## Abstract The complete ^13^C NMR analysis of 3βsubstituted camphors with F, Cl, Br, I, OH, OMe, SMe, NHMe, NMe~2~ and Me substituents at __endo__ and __exo__ positions, and also the corresponding βoxoβ and dichloro derivatives, were obtained by 1D and 2D NMR techniques. The resulting substituentβ