Abstract
A novel and efficient method of C-7 direct arylation of the imidazo[1,2- b ]pyrazole core, never described to date, is presented in this paper. Series of electron-rich or electron-poor aryl and heteroaryl groups were easily introduced. The corresponding products were obtained in moderate to excellent yields thanks to this pallado-catalyzed and microwave-assisted process. A one-pot double C-3 and C-7 direct coupling is also reported.
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