Palladium-catalyzed direct arylation using free NH2 substituted thiophene derivatives with inhibition of amination type reaction
作者:Fazia Derridj、Karima Si Larbi、Julien Roger、Safia Djebbar、Henri Doucet
DOI:10.1016/j.tet.2012.06.053
日期:2012.9
The palladium-catalyzeddirectarylation at C2 or C5 of free NH2 substituted thiophene derivatives was found to proceed in moderate to high yields using a variety of aryl halides. The choice of potassium acetate as the base was found to be crucial to inhibit the amination reaction and to promote the directarylation.