Bulletin of the Chemical Society of Japan p. 1882 - 1886 (1984)
Update date:2022-08-02
Topics:
Sugiyama, Toru
Kusano, Yukari
Yagi, Kazuya
Ito, Yoko
Sugimori, Akira
The UV-irradiation of methyl 4-pyridinecarboxylate (1) in methanol under oxygen in the presence of sulfuric acid brings about methoxylation at the 3-position of the pyridine ring, while under nitrogen methoxylation and hydroxymethylation occur at the 2-position.The change of photoreactions of 1 caused by oxygen can not be explained either by the promotion of intersystem crossing by O2 or by the charge transfer interactions between 1 and O2.
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