/sup 13/C NMR spectra of cyclic nitrones. 2. 1- and 4-substituted 2,2,5,5-tetramethyl-3-imidazoline 3-oxides
Journal Article
·
· Chem. Heterocycl. Compd. (Engl. Transl.); (United States)
The chemical shift of the carbon atom of the nitrone group in the /sup 13/C NMR spectra of 3-imidazoline 3-oxides lies in the region of 117-152 ppm and depends on the electronic effect of the substituents at positions 1, 4, and 5 of the heterocycle. Increase in the electron-withdrawing character of the substituent at these positions leads to an upfield shift of the signal for the nitrone carbon atom, and this corresponds to the increase in electron density on it.
- Research Organization:
- Novosibirsk Institute of Organic Chemistry, USSR
- OSTI ID:
- 6181311
- Journal Information:
- Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Vol. 21:2; Other Information: Translated from Khim. Geterotsikl. Soedin.; 21: No.2, 252-259(Feb 1985)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
IMIDAZOLES
CHEMICAL SHIFT
NMR SPECTRA
BINDING ENERGY
CARBON
CHARGE DISTRIBUTION
COUPLING CONSTANTS
DECARBOXYLATION
ELECTRON TRANSFER
ELECTRONS
HYDROGEN 1
HYDROGEN TRANSFER
J-J COUPLING
MOLECULAR ORBITAL METHOD
MOLECULAR STRUCTURE
OXIDES
QUANTUM MECHANICS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
VALENCE
AZOLES
CHALCOGENIDES
CHEMICAL REACTIONS
COUPLING
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
FERMIONS
HETEROCYCLIC COMPOUNDS
HYDROGEN ISOTOPES
INTERMEDIATE COUPLING
ISOTOPES
LEPTONS
LIGHT NUCLEI
MECHANICS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
SPECTRA
STABLE ISOTOPES
400201* - Chemical & Physicochemical Properties
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
IMIDAZOLES
CHEMICAL SHIFT
NMR SPECTRA
BINDING ENERGY
CARBON
CHARGE DISTRIBUTION
COUPLING CONSTANTS
DECARBOXYLATION
ELECTRON TRANSFER
ELECTRONS
HYDROGEN 1
HYDROGEN TRANSFER
J-J COUPLING
MOLECULAR ORBITAL METHOD
MOLECULAR STRUCTURE
OXIDES
QUANTUM MECHANICS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
VALENCE
AZOLES
CHALCOGENIDES
CHEMICAL REACTIONS
COUPLING
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
FERMIONS
HETEROCYCLIC COMPOUNDS
HYDROGEN ISOTOPES
INTERMEDIATE COUPLING
ISOTOPES
LEPTONS
LIGHT NUCLEI
MECHANICS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
SPECTRA
STABLE ISOTOPES
400201* - Chemical & Physicochemical Properties
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory