HETEROCYCLES

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

■ 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

Abstract

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.