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Relevant academic research and scientific papers

Transformation of oximes of phenetyl ketone derivatives to quinolines and azaspirotrienones catalyzed by tetrabutylammonium perrhenate and trifluoromethanesulfonic acid

Phenethyl ketone oximes are converted to quinolines by the treatment with tetrabutylammonium perrhenate, trifluoromethanesulfonic acid, and chloranil in refluxing 1,2-dichloroethane. Azaspirotrienones can be synthesized from p-hydroxyphenethyl or 3-(p-hydroxyphenyl)propyl ketone oximes by applying the above method. Thus prepared azaspirotrienones are converted to quinolines by acid treatment.

Synthesis of Quinolines via Intramolecular Cyclization of Benzylacetone Oxime Derivatives Catalyzed with Tetrabutylammonium Perrhenate(VII) and Trifluoromethanesulfonic Acid

Intramolecular cyclization reaction on the nitrogen atom of benzylacetone oxime derivatives, which have electron donating group(s) on the phenyl group, proceeds by treatment with tetrabutylammonium perrhenate, trifluoromethanesulfonic acid, and 4-chloranil in refluxing 1,2-dichloroethane to afford quinoline derivatives in good yield.