Construction of new heteroacenes based on benzo[b]thieno[2,3-d]thiophene / quinoline or 1,8-naphthyridine systems using the Friedländer reaction
作者:Roman A. Irgashev、Nadezhda S. Demina、Nikita A. Kazin、Gennady L. Rusinov
DOI:10.1016/j.tetlet.2019.03.041
日期:2019.4
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。