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.
几个供体-受体取代bithiophenes通过的官能化合成相应的5-烷氧基-或5- aminobithiophenes 1通过不同的方法:维尔斯迈尔甲酰化,
金属化,随后用
DMF,使用TCNE或Knoevenagel缩合从相应的5-开始直接tricyanovinylation反应反应的甲酰基衍
生物1。