169229-08-7Relevant articles and documents
Synthesis of Pyridocyclobuten-5-one and 1-Azafulvenallene by Flash Vacuum Pyrolysis of 3-Chloroformyl-2-methylpyridine
Chou, Chin-Hsing,Wu, Cheng-Chang,Chen, Wey-Kao
, p. 5065 - 5068 (1995)
The temperature and pressure dependence of products formed on pyrolysis of 3-chloroformyl-2-methylpyridine (6) have been studied.Pyrolysis of 6 at 575 deg C and ca. 1 x 10-4 torr gives pyridocyclobuten-5-one (5) in 20percent yield.Pyrolysis of 6 at 575 and 800 deg C and under the pressure of ca. 1 x 10-2 torr give 1-azafulvenallene (7, 46percent) and 1-cyanocyclopentadiene (8, 42percent), respectively.Irradiation of 5 (λ > 300 nm) in methanol affords 2-methoxy-3-acetylpyridine (9) quantitatively.