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Paper | Regular issue | Vol 27, No. 7, 1988, pp.1665-1670
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4538
Photochamistry of Conjugated Nitrogen-Carbonyl System. V. Photoisomerization of 3,4-Diazabicyclo[4.2.0]oct-4-en-2-one System

Eisuke Sato, Masato Hasebe, and Yuichi Kanaoka*

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


Irradiation through a Vycor filter of 3,4-diazabicyclo-[4.2.0]oct-4-en-2-ones(3) obtained by photoaddition of 3(2H)-pyridazinones (1) and olefin resulted in isomerization to give 2,3-diazatricyclo-[,8]octa-4-ones (4).