Teoría funcional de la densidad: estudio asistido por computadora de los espectros de RMN ¹H y 13C del 4-hidroxi-3-(3'-metil-2'-butenil) acetofenona aislada de Senecio Graveolens y su derivado sintetizado por microondas, 4'-hidroxi-3'-(3-metil-2-butenil) chalcona
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Rev. Bol. Quim
Abstract
Utilizando la teoría funcional de la densidad, se realizó el estudio espectral asistido por computadora de los desplazamientos (8) químicos de RMN lH y 13C, y de algunas otras propiedades moleculares de la 4-hidroxi-3-(3-metil-2-butenil)acetofenona 1 y de la 4'-hidroxi-3'-(3-metil-2-butenil)chalcona 2. El compuesto 1 fue aislado en un trabajo previo de las partes áreas de Senecio graveolens y su derivado sintético 2 fue obtenido por irradiación con microondas de 1 con benzaldehído, tal como lo publicaron previamente los autores. Los cálculos arrojaron resultados confiables que están en buena correlación con los datos experimentales. Esta es una buena base para la colaboración entre químicos experimentales y cuánticos. Siguiendo las tendencias actuales en la descripción de datos de RMN para moléculas pequeñas, para su lectura y almacenamiento de datos de correlación 2D accesibles por computadora y humanos, resumimos los datos experimentales de RMN ID y 2D de 1 y 2.
The spectral computer-assisted study of ¹H and 13C NMR chemical shifts (8), and some other molecular properties of 4-hydroxy-3-(3-methyl-2-butenyl)acetophenone 1 and 4'-hydroxy-3'-(3-methyl-2-butenyl)chalcone 2 was carried out by using the density functional theory. Compound 1 was isolated from Senecio graveolens and its synthetic derivative 2 obtained by microwave irradiation of 1 with benzaldehyde, as previously published by the authors. The calculations yielded reliable results that are in good correlation with the corresponding experimental data. This is a good basis for collaboration between experimental and quantum chemists. Following current trends in NMR data description for small molecules, for its human- and computer-accessible 2D correlation data computer reading and storing, we summarized the ID and 2D NMR experimental data of 1 and 2.
The spectral computer-assisted study of ¹H and 13C NMR chemical shifts (8), and some other molecular properties of 4-hydroxy-3-(3-methyl-2-butenyl)acetophenone 1 and 4'-hydroxy-3'-(3-methyl-2-butenyl)chalcone 2 was carried out by using the density functional theory. Compound 1 was isolated from Senecio graveolens and its synthetic derivative 2 obtained by microwave irradiation of 1 with benzaldehyde, as previously published by the authors. The calculations yielded reliable results that are in good correlation with the corresponding experimental data. This is a good basis for collaboration between experimental and quantum chemists. Following current trends in NMR data description for small molecules, for its human- and computer-accessible 2D correlation data computer reading and storing, we summarized the ID and 2D NMR experimental data of 1 and 2.
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Vol. 36, No. 3