Palladium-Catalysed Amination of Electron-Deficient or Relatively Electron-Rich Benzo[b]thienyl Bromides− Preliminary Studies of Antimicrobial Activity and SARs
作者:Maria-João R. P. Queiroz、Agathe Begouin、Isabel C. F. R. Ferreira、Gilbert Kirsch、Ricardo C. Calhelha、Sandra Barbosa、Letícia M. Estevinho
DOI:10.1002/ejoc.200400218
日期:2004.9
Several diarylamines in the benzo[b]thiophene series were prepared in good to high yields by palladium-catalysed amination of ethyl 3-bromobenzo[b]thiophene-2-carboxylate with anilines and 5-aminoindole in the presence of Pd(OAc)2, BINAP and Cs2CO3 in toluene. The presence of the ester group at the 2-position of the benzo[b]thiophene moiety increases the yields and lowers the heating times relative