Journal of the Chilean Chemical Society
versión On-line ISSN 0717-9707
HUANG, XIANQIANG; DOU, JIANMIN; LI, DACHENG y WANG, DAQI. A NEW METHOD TO SYNTHESIZE 3,5-DIARYLPYRAZOL DERIVATIVES. J. Chil. Chem. Soc. [online]. 2009, vol.54, n.1, pp. 20-22. ISSN 0717-9707. http://dx.doi.org/10.4067/S0717-97072009000100005.
Twelve 3, 5-diarylpyrazoles have been synthesized by microwave-assisted condensation reaction in a short and concise manner using various aromatic aldehydes and aromatic ketones as starting materials. The corresponding products were obtained in good yields (87-96%). All products were identified by MS, 1H NMR, 13C NMR and elemental analysis. The advantages of this novel protocol include the excellent yield, operational simplicity, short time and the avoidance of the use of expensive catalysts.
Palabras clave : 2,4, 6-Triarylpyrylium salts; 3,5-Diarylpyrazoles; Microwave irradiation.