𝔖 Bobbio Scriptorium
✦   LIBER   ✦

17O NMR spectra of 2-phenylmethylene cyclic ketones

✍ Scribed by Jin-Cong Zhuo


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
198 KB
Volume
35
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Natural abundance 17O NMR spectra of some 2-phenylmethylene cyclic ketones are reported. The 17O shifts vary with the ring system, and correlate well with those of the corresponding cyclic ketones. 1997


πŸ“œ SIMILAR VOLUMES


17O NMR spectra and conformation of cycl
✍ Esko Taskinen; Mikko Ora πŸ“‚ Article πŸ“… 1995 πŸ› John Wiley and Sons 🌐 English βš– 432 KB

The "0 NMR spectra of a number of heterocyclic vinyl ethers were recorded in CDCI, and DMSO-d, solutions. The oxygen chemical shifts reveal substantial differences in the strength of p-n conjugation between the five-and six-membered ring compounds, especially between those with an exocyclic C=C bond

17O NMR Spectra of Divinyl Ethers
✍ Esko Taskinen πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 207 KB πŸ‘ 1 views

The 17O NMR spectra of a number of alkyl-and phenyl-substituted divinyl ethers were recorded in CDCl 3 solution. The relationship between chemical shift and the number, nature and position of substituents was explored. The shift values, falling in the range d 100-140 ppm, were found to be remarkably

17O NMR spectra of Ξ±-diesters
✍ Giovanni Cerioni; Gianluca Uccheddu πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 75 KB

Intercarbonyl dihedral angles have been estimated by molecular mechanics, which show invariance except in one case. Because of this invariance, contrary to other a-dicarbonyl compounds, a correlation between chemical shifts and dihedral intercarbonyl angles could not be developed. Spectroscopic and

17O NMR spectra of vinyl ethers
✍ Esko Taskinen; Jaakko Hellman πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 471 KB

## Abstract The ^17^O NMR spectra of 58 Ξ±,β‐unsaturated (vinyl) ethers were recorded in CDCl~3~ solution. The dependence of the chemical shift on the number and position of alkyl substituents in the vinyl moiety and on the nature and bulkiness of the alkoxy group was explored. The oxygen chemical s

17O NMR spectra of some Meisenheimer add
✍ VladimΓ­r MachÑček; AntonΓ­n Lyčka; JaromΓ­r KavΓ‘lek πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 58 KB
17O NMR Spectra of 1-adamantylphosphoryl
✍ Helmut Duddeck; Atef G. Hanna πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 318 KB

The "0 chemical shifts and one-bond phosphorus-oxygen coupling constants of a series of 1-adamantylphosphoryl derivatives are reported and discussed. It was found that a signi6cant 2p electron transfer towards the phosphoryl oxygen in the phosphonic esters is clearly reflected by the "0 NMR paramete