Bulletin of the Chemical Society of Japan p. 2837 - 2846 (1988)
Update date:2022-08-11
Topics:
Sugimori, Akira
Itoh, Hiroshi
Kanai, Mitsuharu
Itoh, Nobuko
Sugiyama, Toru
The UV-irradiation of 2- and 4-pyridinecarboxamides in alcohol brings about alkylation and/or hydroxyalkylation in the pyridine ring.In the irradiation of 3-pyridinecarboxamide in the presence of sulfuric acid, ionic reaction (alkoxylation at the 2- and 6-position) and radical reaction (alkylation at the 4- and 6-position) occur in parallel.The effects of quenchers indicate that two alkylation products originate from one excited triplet state which is quenched by energy-transfer mechanism and that two alkoxylation products originate from the excited singlet state.
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