Bulletin of the Chemical Society of Japan p. 1779 - 1784 (1988)
Update date:2022-08-11
Topics:
Badr, M.Z.A.
Aly, M.M.
Mahgoub, S.A.
Fahmy, A.M.
Atallah, A.A.
Thermolysis of benzophenone O-benzoyloxime leads to the formation of NH3, CO2, benzene, biphenyl, benzophenone, benzanilide, benzonitrile, benzoic acid, 2-phenylbenzoxazole, salicylaldehyde and its p-isomer.Analogous results were also obtained on thermolysis of acetophenone O-benzoyloxime.Similarly, benzophenone and/or acetophenone O-benzyloximes give pyrolysis products of the same nature in addition to others corresponding to the benzyl moiety.Thermolysis of deoxybenzoin oxime gives NH3, toluene, benzonitrile, bibenzyl, benzil, benzyl alcohol, and 2-phenylindole.Moreover, its O-benzoyl ether affords in addition to these products, benzoic acid and benzyl benzoate.The main feature of these pyrolyses is the homolysis of the N-O bond together with either O-benzyl or O-benzoyl bonds providing free radicals that undergo different reactions involving H-abstraction, dimerization, fragmentation, rearrangement and cyclization to form the identified products.
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