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Communication | Regular issue | Vol 32, No. 4, 1991, pp.649-654
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5630
Photoinduced Fragmentation of Pyrido[2,1-f]-as-triazinium-4-olate and Its Benzologue. A Contribution to the Mechanism of Curtius Rearrangement

Sándor Bátori, András Messmer,* and Hans-Joachim Timpe

*Central Research Institute for Chemistry, Hungarian Academy of Sciences, H-1025 Budapest, Pusztaszeri ut 59-67, P.O.Box 17, Hungary


The zwitterionic pyrido[2,1-f]-as-triazinium-4-olates (1a-b) and as-triazino[6,1-a]isoquinolinium-1-olate (10) were photolysed to give acid amides (5) and (11), respectively. Formation of 5 through acylnitrene (4) was supported in separate experiment.