作者:Guy Koeckelberghs、Lieven De Cremer、Wouter Vanormelingen、Wim Dehaen、Thierry Verbiest、André Persoons、Celest Samyn
DOI:10.1016/j.tet.2004.10.106
日期:2005.1
A new, convergent and improved synthetic method to prepare N-alkyl substituted dithienopyrroles is described. The procedure consists of a Pd-catalyzed amination of 3,3'-dibromo-2,2'-bithiophene. The reaction conditions were optimized, which makes this method applicable to prepare these molecules easily in high yields and on a large scale. (C) 2004 Elsevier Ltd. All rights reserved.