Artículo
Photochemistry of imidazolium cations. Water addition to methylimidazolium ring induced by UV radiation in aqueous solution
Sarmiento, Gabriela Pabla
; Zelcer, Andrés
; Espinosa, Mariela Soledad; Babay, Paola Alejandra; Mirenda, Martin
Fecha de publicación:
01/2016
Editorial:
Elsevier Science Sa
Revista:
Journal of Photochemistry and Photobiology A: Chemistry
ISSN:
1010-6030
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The UV-C induced photoaddition of water to N-alkyl-N′-methylimidazolium cations was studied. The main photoreaction products exhibit chemical additions of a proton and a hydroxyl group to either positions 4 or 5 of the imidazolium ring. For unsymmetrical imidazolium cations, two positional isomers were obtained as products. In these cases, the most abundant isomer is the one in which the hydroxyl group adds at the side of the ring having the longer alkyl substituent. Experiments performed in D2O solutions reveal that the additions of proton and hydroxyl group never take place at the same carbon atom, in a reaction that produces equal amounts of diastereoisomers. Moreover, the formation of diastereoisomers at equal proportions suggests that the reaction proceeds in an unconcerted fashion.
Palabras clave:
Imidazolium
,
Ionic Liquid
,
Photoaddition
,
Uv-C Reaction
,
Water Addition
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Articulos(CIBION)
Articulos de CENTRO DE INVESTIGACIONES EN BIONANOCIENCIAS "ELIZABETH JARES ERIJMAN"
Articulos de CENTRO DE INVESTIGACIONES EN BIONANOCIENCIAS "ELIZABETH JARES ERIJMAN"
Citación
Sarmiento, Gabriela Pabla; Zelcer, Andrés; Espinosa, Mariela Soledad; Babay, Paola Alejandra; Mirenda, Martin; Photochemistry of imidazolium cations. Water addition to methylimidazolium ring induced by UV radiation in aqueous solution; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 314; 1-2016; 155-163
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