the Friedländer reaction to annulate the benzo[b]thieno[2,3-d]thiophene scaffold to quinoline or 1,8-naphthyridine fragments. In accordance with this synthetic strategy, benzo[b]thieno[2,3-d]thiophen-3(2H)-ones were treated with 2-aminobenzaldehydes or 2-aminonicotinaldehyde in the presence of pyrrolidine in glacial acetic acid at reflux to give the desired quinoline- or 1,8-naphthyridine-fused compounds
两类新的杂炔,即苯并[4',5'] thieno [2',3':4,5]
噻吩并[3,2- b ]
喹啉和苯并[4',5']
噻吩并[2, 3':4,5] thieno [3,2- b ] [1,8]
萘啶已通过Friedländer反应形成,将苯并[ b ] thieno [2,3- d ]
噻吩骨架环化为
喹啉或1 ,8-
萘啶片段。按照这种合成策略,苯并[ b ]
噻吩并[2,3 - d ]
噻吩-3(2 H在
吡咯烷的存在下,在
冰醋酸中,在回流下,用
2-氨基苯甲醛或2-
氨基
烟碱处理1-
氨基,分别得到所需的
喹啉-或
1,8-萘啶基-稠合的化合物。确定了所选杂苯的光学和电
化学性质。