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Communication | Regular issue | Vol 45, No. 8, 1997, pp.1463-1466
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7856
Syntheses of 5-Arylpyrazole Derivatives via Palladium-catalyzed Cross-Coupling Reactions

Kazuo Yagi,* Tomoyuki Ogura, Akira Numata, Shigeru Ishii, and Kazutaka Arai

*Central Research Institute, Nissan Chemical Industries Ltd., 722-1 Tsuboicho, Funabashi, Chiba 274-8507, Japan


The first examples of a direct introduction of an aryl group onto a pyrazole ring via palladium-catalyzed cross-coupling reactions are reported. It was found that substituents at 1-position on the pyrazole ring affected the yields, and dimethylsulfamoyl group, as an electron-withdrawing group, gave highest yield.