A proton NMR analysis of the OCH3 group conformation in 2‐methoxypyridines

Mostrar todas las versiones(2)

The absence of HH couplings between the methoxy group and the ring protons observed in 2‐methoxy‐, 2,6‐dimethoxy‐ and 2‐methoxy‐6‐chloropyridines is interpreted in terms of a cis conformation between the methyl fragment and the nitrogen ring atom. Other data, taken from the current literature, supp...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Contreras, Rubén Horacio, Facelli, Julio César
Publicado:	1982
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00304921_v20_n1_p40_Contreras http://hdl.handle.net/20.500.12110/paper_00304921_v20_n1_p40_Contreras
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

Ejemplares similares

A proton NMR analysis of the OCH3 group conformation in 2‐methoxypyridines
por: Contreras, Rubén Horacio
Publicado: (1982)

A proton NMR analysis of the OCH3 group conformation in 2‐methoxypyridines
por: Contreras, R.H., et al.

The NMR analysis of the methoxy-group conformation in 4-methoxy-2-nitroaniline
por: Contreras, Rubén Horacio, et al.
Publicado: (1982)

Effects of electronic resonance interaction on the methoxy group NMR parameters. Theoretical and experimental study of substituted 2-methoxypyridines
por: Contreras, Rubén Horacio, et al.
Publicado: (1993)

The NMR analysis of the methoxy-group conformation in 4-methoxy-2-nitroaniline
por: Contreras, Rubén Horacio
Publicado: (1982)

The NMR analysis of the methoxy-group conformation in 4-methoxy-2-nitroaniline
por: Contreras, R.H., et al.

Effects of electronic resonance interaction on the methoxy group NMR parameters. Theoretical and experimental study of substituted 2-methoxypyridines
por: Contreras, R.H., et al.
Publicado: (1993)

Effects of electronic resonance interaction on the methoxy group NMR parameters. Theoretical and experimental study of substituted 2-methoxypyridines
por: Contreras, R.H., et al.

Effects of electronic resonance interaction on the methoxy group NMR parameters. Theoretical and experimental study of substituted 2-methoxypyridines
por: Contreras, R.H., et al.
Publicado: (1993)

Vicinal NMR proton - Proton coupling constants. An NBO analysis
por: Esteban, A.L., et al.

Vicinal NMR proton - Proton coupling constants. An NBO analysis
Publicado: (2001)

Vicinal NMR proton - Proton coupling constants. An NBO analysis
por: Esteban, A.L
Publicado: (2001)

Methoxy group conformation effects on 13C NMR parameters in 1‐cis‐methoxy‐ and 1‐trans‐methoxy‐1,3‐trans‐butadiene
por: Biekofsky, Rodolfo Roberto, et al.
Publicado: (1994)

Carbon - carbon and carbon - proton NMR couplings applications to organic stereochemistry and conformational analysis
por: Marshall, James L.
Publicado: (1983)

Carbon - carbon and carbon - proton NMR couplings applications to organic stereochemistry and conformational analysis
por: Marshall, James L.
Publicado: (1983)

Inclusion of hydrogen p orbitals in the semiempirical calculation of NMR parameters. III: INDO CHF calculations of orbital and dipolar contributions to spin–spin coupling constants involving protons
por: Facelli, Julio César, et al.
Publicado: (1981)

Vibrational contributions to vicinal proton-proton coupling constants3JHH
por: Contreras, Rubén Horacio
Publicado: (2010)

A 13C NMR and AM1 study on intramolecular interactions defining the methoxy group conformation in unhindered anisole derivatives
por: Biekofsky, Rodolfo Roberto, et al.
Publicado: (1995)

NMR spin-spin couplings involving nuclei in the neighborhood of a carbonyl group. 3JCH couplings in α-substituted acetamides
por: Contreras, Rubén Horacio
Publicado: (2008)

Methoxy group conformation effects on 13C NMR parameters in 1‐cis‐methoxy‐ and 1‐trans‐methoxy‐1,3‐trans‐butadiene
por: Esteban, A.L., et al.

Conformational effects on 13C NMR parameters in alkyl formates
por: De Kowalewski, D.G., et al.

Staten och jernvägarne
por: Troilius, C. R.
Publicado: (1890)

Natural bond orbitals analysis of C-H ··· O interactions in NCH/H2O and NCH/OCH2, and their effect on nuclear magnetic shielding constants
por: Peralta, Juan Ernesto, et al.
Publicado: (1999)

A 13C NMR and AM1 study on intramolecular interactions defining the methoxy group conformation in unhindered anisole derivatives
por: Biekofsky, R.R., et al.

13C- and 1H-NMR spectra of 2-pyridone derivatives
por: Contreras, Rubén Horacio
Publicado: (1989)

Conformational analysis in 2,4-dinitrophenol by nuclear Overhauser effect experiments
por: Balonga, Pablo Enrique, et al.
Publicado: (1984)

From NMR spectra to structure
por: Facelli, Julio César, et al.
Publicado: (2013)

Experimental and theoretical study of the ethoxy group conformational effect on 13c chemical shifts in ortho-substituted phenetols
por: Kowalewski, Valdemar J., et al.
Publicado: (1997)

Conformational effects on 13C NMR parameters in alkyl formates
Publicado: (1998)

Conformational effects on 13C NMR parameters in alkyl formates
por: De Kowalewski, D.G
Publicado: (1998)

Och-Ziff Capital Management Group LLC MarketLine Company Profile

Methoxy group conformation effects on 13C NMR parameters in 1‐cis‐methoxy‐ and 1‐trans‐methoxy‐1,3‐trans‐butadiene
por: Esteban, A.L
Publicado: (1994)

Zorn. Svensk och Varldsvandrare
por: Boëthius, Gerda
Publicado: (1959)

Fanny och Alexander = Fanny y Alexander /
Publicado: (1982)

Fanny och Alexander = Fanny y Alexander /
Publicado: (1982)

Viskningar och rop = Gritos y susurros
Publicado: (2003)

Bidrag till sveriges ekonomiska och sociala historia under och efter Varldskriget
por: Heckscher, E. F.
Publicado: (1926)

Ab initio and 17O NMR studies of the substituent effects on the tautomeric equilibrium in 6-X-1H-2-pyridones
por: Facelli, Julio César, et al.
Publicado: (1992)

Inclusion of hydrogen p orbitals in the semiempirical calculation of NMR parameters. II. Influence on the geometrical dependence of the FPT-INDO spin-spin coupling constants
por: Facelli, Julio César, et al.
Publicado: (1981)

Conformational analysis of 5,6,7‐trisubstituted flavones: 13C NMR and molecular mechanics study
por: Biekofsky, Rodolfo Roberto, et al.
Publicado: (1991)