1H, 13C and 77Se NMR spectra of substituted selenoanisoles
β Scribed by G. A. Kalabin; D. F. Kushnarev; V. M. Bzesovsky; G. A. Tschmutova
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 788 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Abstract
The ^1^H, ^13^C and ^77^Se chemical shifts and the ^1^J[C(Me)H(Me)], ^1.2^J(SeC) and ^2^J(SeH) coupling constants in 14 paraβ or metaβsubstituted selenoanisoles, Rο£ΏC~6~H~4~ο£ΏSeο£ΏCH~3~, have been measured and the dependence of these parameters on the electronic effects of the substituent R is discussed. A significant (up to 6 ppm) deviation from additivity of the substituent influence on the shielding of the ^13^C ring carbons has been found.
π SIMILAR VOLUMES
(1)H and (13)C NMR data for N-substituted morpholines 1-20 were measured using 1D (DEPT, 1D NOE difference) and 2D NMR spectroscopic methods including (1)H-(1)H COSY, long-range (1)H-(1)H COSY, NOESY, gHMBC and gHMQC experiments. At room temperature the (1)H NMR spectra of protonated compounds 2 and
## Abstract The ^77^Se, ^13^C and ^1^H NMR spectra of 57 mostly new compounds with phenylselenenyl groups attached to acyclic alkanes, alkenes and phenylalkanes and of 10 corresponding selenoxides are reported. Substituent effects on the chemical shifts of these nuclei were determined and are discu
## Abstract The ^13^C and ^77^Se NMR spectra of eight new unsubstituted biheterocycles containing a thiophene or selenophene ring condensed with an isothiazole or isoselenazole ring were recorded. The assignments of the ^13^C signals were made by the examination of chemical shifts, ^1^__J__(CH) cou
Numerous areneselenenamides derived from ammonia, primary and secondary amines and two N,N-bis(ary1-se1eno)alkylamines have been studied. The selenenamides bearing an electron-withdrawing substituent on the aromatic moiety are stable. The 'H, 13C and 77Se chemical shifts and some coupling constants