1-methoxycarbonyl- and 1-cyano-substituted 3-acetyl-2-methylazulenes (2aa-ae, 2ba-be), respectively, with N-bromosuccinimide. These azulenes (4aa-ae, 4ba-be) reacted with thioacetamide to give azuleno[1,2-c]thiophenes (7aa-ae, 7ba-be) in moderate yields. This reaction provides a new procedure for synthesis of thiophene-fused azulenes.
                                    通过相应的 1-甲氧基羰基和1-
氰基取代的 3-乙酰基-
2-甲基薁 (2aa-ae, 2ba-be) 分别与 N-
溴代琥珀
酰亚胺。这些 azulenes (4aa-ae, 4ba-be) 与
硫代乙酰胺反应生成 azuleno[1,2-c]thiophenes (7aa-ae, 7ba-be),产率适中。该反应提供了一种合成
噻吩稠合薁的新方法。