A Combination of Friedel-Crafts and Lawesson Reactions to 5-Substituted 2,2’-Bithiophenes
作者:M. Manuela M. Raposo、Gilbert Kirsch
DOI:10.3987/com-01-9249
日期:——
Formylation, dicyanovinylation and tricyanovinylation of 5-alkoxy- and 5-amino- substituted 2,2′-bithiophenes
作者:M.Manuela M Raposo、G Kirsch
DOI:10.1016/s0040-4020(03)00705-1
日期:2003.6
Several donor–acceptor-substituted bithiophenes were synthesized by functionalization of the corresponding 5-alkoxy- or 5-aminobithiophenes 1 by different methods: Vilsmeier formylation, metalation followed by reaction with DMF, direct tricyanovinylation reaction using TCNE or Knoevenagel condensation starting from the corresponding 5-formyl- derivatives of 1.