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Paper | Regular issue | Vol 26, No. 6, 1987, pp.1611-1618
Published online, 1st January, 1970
DOI: 10.3987/R-1987-06-1611
Photoisomerization of 4-t-Butyl-2-piridones and Chemical Properties of the Resulting 2-Azabicyclo[2.2.0]hex-5-en-3-one and the Hexan-3-one Systems

Eisuke Sato, Yoshiya Ikeda, Yuichi Kanaoka, and Haruo Okajima

*Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12 Nishi 6, Kita-ku, Sapporo, Hokkaido 060-0812, Japan


Irradiation of 4-t-butyl-2-pyridones 1a,b gave their valence isomers 2a,b in good yields. Treatment of bicyclic photoproducts 2a and 3a with acid gave the products due to C-C bond cleavage - of the 4-membered rings.