Diethyl 2,7-Dibromo-4<i>H</i>,5<i>H</i>- thieno[3,2-<i>b</i>:4,5-<i>b</i>‘]dipyrrole-3,6- dicarboxylate: A Key Intermediate for a Diversity Oriented Synthesis of 2,7,12,17-Tetraarylporphycenes
作者:Ofir Arad、Jordi Morros、Xavier Batllori、Jordi Teixidó、Santiago Nonell、José I. Borrell
DOI:10.1021/ol052913+
日期:2006.3.2
A new Suzuki-based strategy for the synthesis of 4,4'-diaryl (or heteroaryl)-substituted 2,2'-bipyrroles (10), precursors of 2,7,12,17-tetraaryl (or heteroaryl)-substituted porphycenes, is described. Bromination of the previously described diethyl 4H,5H-thieno[3,2-b:4,5-b']dipyrrole-3,6-dicarboxylate afforded dibromo compound 19, which is the key intermediate of such strategy.