Calhelha, Ricardo C.Ferreira, Isabel C.F.R.Estevinho, Leticia M.Queiroz, Maria João R.P.2011-02-212011-02-212005Calhelha, Ricardo C.; Ferreira, Isabel C.F.R.; Estevinho, Letícia M.; Queiroz, Maria-João R.P. (2005). Synthesis of 7-aryl or heteroarylamino-2,3-dimethylbenzo[b]thiophenes by palladium-catalyzed C-N cross coupling and anti-oxidant activity studies. In 6º Encontro Nacional de Química Orgânica. Bragahttp://hdl.handle.net/10198/3475ln recent years we have been interested in the synthesis of diarylamines in the benzo[b]thiophene series functionalizing either the benzene or the thiophene2 ring. Here we describe the synthesis of new 7-aryl or heteroarylamino-2,3-dimethylbenzo[b]thiophenes, reacting, the also prepared 7-bromo or 7-amino-2,3-climethylbenzo[b]thiophenes with anilines and 3-aminopyridine or bromobenzenes anel 2-bromopyridine, respectively, under palladium-catalyzed C-N cross-coupling conditions (Scheme).engconference object