
TY  - JOUR
A1  - Baradarani, Mehdi M. 
A1  - Khalafy, Jabbar 
A1  - Prager, Rolf H. 
T1  - A Comparison of the Flash Vacuum Pyrolysis Products of Some <emph type="2">N</emph>-Acylbenzotriazoles and <emph type="2">N</emph>-Acylbenzisoxazolones
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1999
VL  - 52
IS  - 8
SP  - 775
EP  - 780
KW  - 
UR  - https://doi.org/10.1071/CH99037 
N2  - The flash vacuum pyrolysis (f.v.p.) products of 2-(1H-benzotriazol-1-ylcarbonyl)benzonitrile, methyl 2-(1H-benzotriazol-1-ylcarbonyl)benzoate and 1-(2-chloromethylbenzoyl)-1H-benzotriazole and the cor- responding benzisoxazolones have been characterized. The benzotriazole derivatives gave compounds whose origin suggests the predominance of radical processes. At lower temperatures the benzisoxa- zolones gave benzoxazole products consistent with a singlet carbene intermediate, but which had triplet diradical properties at higher temperatures, leading to the formation of acridine from the chloromethyl compound. The major low-temperature f.v.p. product from the (chloromethylbenzoyl)benzisoxazolone was indolo&#91;1,2-b&#93;benzoxazole. 
ER  -

