2024-03-28T18:06:28Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00012348
2022-12-14T04:06:57Z
1221:1222
Reaction of spironaphthoxazine with acid
Nishikiori, Hiromasa
Shimamura, Suguru
Fujii, Tsuneo
Copyright© 2012 Elsevier B.V.
Spironaphthoxazine
Acid
Protonation
Complex
Fluorescence
The reaction of spironaphthoxazine (SNO) with acid in ethanol was investigated by spectroscopic analyses SNO was protonated and then transformed into a complex in an acidic ethanol solution in the dark. It is presumed that the complex contains a hydrated proton and its structure is similar to that of the metal complex of a merocyanine-type isomer photoderived from SNO based on its UV-vis absorption and fluorescence spectra. The complex dissociated into SNO by adding base. The complex was further changed under acidic conditions after a long time. Highly concentrated acid decomposed SNO to an indoline compound having a carboxyl group and 1-amino-2-naphthol, which was revealed by fluorescence, IR, and GC-MS analyses. These reaction processes were promoted by UV irradiation.
Article
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY. 252:100-106 (2013)
ELSEVIER SCIENCE SA
2013-01-15
eng
journal article
AM
http://hdl.handle.net/10091/17209
https://soar-ir.repo.nii.ac.jp/records/12348
https://doi.org/10.1016/j.jphotochem.2012.11.004
10.1016/j.jphotochem.2012.11.004
1010-6030
AA10684407
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
252
100
106
https://soar-ir.repo.nii.ac.jp/record/12348/files/Reaction_spironaphthoxazine_acid.pdf
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