Browsing by Author "Fuente, J. de la"
Now showing items 1-9 of 9
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Fuente, J. de la; Lissi Gervaso, Eduardo A. (Sociedad Chilena de Química, 1986)Pyrolysis of di-terbutylperoxyoxalate at 45ºC in the presence of acetaldehyde produces quantitative yields of tertbutanol and biacetyl. Luminescence arising from excited biacetyl is produced during the peroxide decomposition. ...
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Sobarzo Sánchez, Eduardo; Fuente, J. de la; Quezada, E.; Castedo, Luis (JOHN WILEY & SONS LTD, 2006-12)The anabaseine derivatives 6-methoxy-7-hydroxy-1-(pyridin-3-yl)-3,4-dihydroisoquinoline, 6,7-dimethoxyl-(pyridin-3-yl)-1,2,3,4-tetrahydroisoquinoline and 6,7-dimethoxy-1-(piperidin-3-yl)-1,2,3,4-tetrahydroisoquino- line ...
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Fuente, J. de la; Cañete Molina, Alvaro Félix; Zanocco Loyola, Antonio; Saitz Barría, Claudio; Jullian Matthaei, Carolina (AMER CHEMICAL SOC, 2000-11-17)The photophysical and photochemical behavior of 1-methyl-3-phenylquinoxalin-2-one (MeNQ) and 3-phenylquinoxalin-2-one (HNQ) in the presence of amines is reported. While HNQ fluorescence shows an auxochromic effect and a ...
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Fuente, J. de la; Cañete Molina, Alvaro Félix; Saitz Barría, Claudio; Jullian Matthaei, Carolina (AMER CHEMICAL SOC, 2002-08-08)Photoreduction of 3-phenylquinoxalin-2-ones, XNQ, by triethylamine, TEA, gives a metastable semireduced quinoxalin-2-one via an electron-proton-electron transfer, with unit quantum yields at high amine concentrations. ...
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Fuente, J. de la; Neira Pacheco, Verónica Alejandra; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Sobarzo Sánchez, Eduardo (AMER CHEMICAL SOC, 2005-07-07)Photoreduction by amines of oxoisoaporphine dyes occurs via a stepwise mechanism of electron-proton electron transfer that leads to the metastable N-hydrogen oxoisoaporphine anion. During photoreduction that occurs from ...
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Fuente, J. de la; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Sobarzo Sánchez, Eduardo; Neira Pacheco, Verónica Alejandra; González, C.; López, R.; Pessoa Mahana, Hernán (ROYAL SOC CHEMISTRY, 2004)Photoreduction of 5,6-dimethoxy-, 5-methoxy- and 2,3-dihydro-7H-dibenzo[de, h] quinolin-7-one (A) by tertiary amines in oxygen-free solutions generates long-lived semi-reduced metastable photoproducts, A - NH-, via a ...
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Sobarzo Sánchez, Eduardo; Castedo, Luis; Fuente, J. de la (SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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Fuente, J. de la; Kciuk, G.; Sobarzo Sánchez, Eduardo; Bobrowski, Krzysztof (AMER CHEMICAL SOC, 2008-10-16)The absorption-spectral and kinetic behavior of radical ions and triplet states of two oxoisoaporphine derivatives, 2,3-dihydrooxoisoaporphine (2,3-DHOA) and 5-methoxy-2,3-dihydrooxoisoaporphine (5-MeO-2,3-DHOA), have been ...
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Fuente, J. de la; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Neira Pacheco, Verónica Alejandra; Poblete, Oscar.; Sobarzo Sánchez, Eduardo (AMER CHEMICAL SOC, 2005-10-28)Photoreduction of oxoisoaporphine dyes occurs via a stepwise mechanism of electron-protonelectron transfer that leads to the N-hydrogen oxoisoaporphine anion. When triethylamine, TEA, was used as the electron donor in ...