Formal hydride transfer mechanism for photoreduction of 3-phenylquinoxalin-2-ones by amines. Association of 3-phenylquinoxalin-2-one with aliphatic amines

JR De la Fuente, A Cañete, AL Zanocco…

Index: De la Fuente; Canete; Zanocco; Saitz; Jullian Journal of Organic Chemistry, 2000 , vol. 65, # 23 p. 7949 - 7958

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Citation Number: 26

Abstract

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 bathochromic shift with added amines, explained by association of HNQ with amine in the ground state and emission from both excited species HNQ* and [HNQ-amine]*, both MeNQ and HNQ are photoreduced ...