Pd-Catalysed Direct 5-Arylation of 1-Methylpyrazole with Aryl Bromides
作者:Hamed Ammar、Henri Doucet、Anissa Beladhria、Kassem Beydoun、Ridha Salem
DOI:10.1055/s-0030-1260076
日期:2011.8
the base and DMAc as the solvent, promotes the 5-arylation in moderate to high selectivities and yields. A wide variety of aryl and heteroaryl bromide derivatives have been successfully employed. Their electronic and steric properties also have an influence on the regioselectivities and yields of the coupling products. Both electron-poor and electron-rich aryl bromides gave satisfactory results, although