New ring systems derived from 4,5-diaminobenzo[b]thiophen and its 3-methyl derivative
作者:N. B. Chapman、K. Clarke、K. S. Sharma
DOI:10.1039/j39710000919
日期:——
5-Diaminobenzo[b]thiophen and its 3-methyl derivative have been prepared. Condensation of these diamines with 9,10-phenanthraquinone gave dibenzo[a,c]thieno[3,2-h]phenazine and its 14-methyl derivative, and with butane-2,3-dione gave 2,3-dimethylthieno[3,2-f]quinoxaline and its 9-methyl derivative. Treatment of the diamines with thionyl chloride gave thieno[3,2-e][2,1,3]benzothiadiazole and its 8-methyl
已经制备了4,5-二氨基苯并[ b ]噻吩及其3-甲基衍生物。这些二胺与9,10-菲蒽醌缩合,生成二苯并[ a,c ]噻吩并[3,2- h ]吩嗪及其14-甲基衍生物,与丁烷-2,3-二酮缩合生成2,3-二甲基噻吩并[3]。 ,2- f ]喹喔啉及其9-甲基衍生物。用亚硫酰氯处理二胺可得到噻吩并[3,2- e ] [2,1,3]苯并噻二唑及其8-甲基衍生物,而用沸腾甲酸处理可生成1 H-(或3 H-)噻吩并[3]。 ,2- è]苯并咪唑及其8-甲基衍生物。报告了这些化合物的核磁共振光谱。噻吩并[3,2- e ] [2,1,3]苯并噻二唑的硝化反应得到7-硝基衍生物。提供了核磁共振成像证据,以支持后者的结构。