30804-33-2

Upstream product

• 30829-41-5 3,4-bis(4-methylphenyl)-cyclobut-3-ene-1,2-dione 
• 3287-02-3 4-(phenylethynyl)toluene 
• 30829-40-4 1,2-Di-p-tolyl-3,3,4,4-tetrafluor-1-cyclobuten 
• 38305-61-2 2,5-diphenyl-3,4-di(p-tolyl)cyclopenta-2,4-dien-1-one 

Relevant academic research and scientific papers

Thermal oxidation of tetracyclones (2,3,4,5-tetraarylcyclopentadienones)

Tetracyclones are transformed to a mixture of diacylstilbenes and a-pyrones, when they are heated in diphenylether saturated with oxygen.

Oxidation of Aromatic Compounds. VI. Oxidation of Unsymmetrical Diarylacetylenes in the CF3COOH-CH2Cl2-PbO2 System

Oxidation of unsymmetrical diarylacetylenes ArC≡CAr′ in the CF3COOH-CH2Cl2-PbO2 system at 0-2°C in 1-3 h yields either pure 1,2,3,4-tetraaryl-2-butene-1,4-diones or mixtures of three isomeric γ-di-ketones Ar(Ar′CO)C=C(COAr′)Ar, Ar′(ArCO)C=C(COAr)Ar′, and Ar′(ArCO)C=C(COAr′)Ar which are predominantly Z isomers. The effect of electronic properties of the substituents in diarylacetylenes on the regio- and stereoselectivity of the reaction is discussed.