Resumo

RUIZ-GUERRERO, Rosario et al. Catalytic Synthesis of 1,3,5-Triphenylbenzenes, β-Methylchalcones and 2,4,6-Triphenyl Pyrylium Salts, Promoted by a Super Acid Triflouromethane Sulfonic Clay from Acetophenones. J. Mex. Chem. Soc [online]. 2006, vol.50, n.3, pp.114-118. ISSN 1870-249X.

A montmorillonite clay from the State of Durango, Mexico, was used as catalyst. The clay was activated with trifluo-romethane sulfonic acid and used to study the condensation of different acetophenones in refluxing benzene to produce triphenylbenzenes, β-methylchalcones and pyrylium salts. This catalytic procedure afforded a new simple one-step method for the synthesis of complex organic molecules through the C-C bonds formation and the counter ion for the pyrylium salt. A proposed mechanism of the isolated compounds is discussed as well as their identification by spectroscopic methods and by comparison with reported data, acquired from the previously synthesized derivatives by other synthetic methods.

Palavras-chave : Heterogeneous Catalysis; Trifluoromethane sulfonic Clays; Acetophenones; Triphenylbenzenes; β-Methylchalcones; Pyrylium salts.