polylithiated di- and tricyanomethylbenzenes with oxalic acid-bis(imidoyl)chlorides afforded novel oligo(indolinylidenemethyl)benzenes with the formation of up to six carbon-carbon bonds. The UV/Vis spectroscopic features of these and related compounds were studied. 1,4-Disubstituted benzenes containing a large π-system have been efficiently prepared by the reaction of dianions with 1,4-dicyanobenzene. (© Wiley-VCH
多
锂化二-和三
氰基甲基苯与
草酸-双(亚
氨酰)
氯化物的反应提供了新的低聚(二氢
吲哚基甲基)苯,最多可形成六个碳-碳键。研究了这些化合物和相关化合物的紫外/可见光谱特征。通过双阴离子与 1,4-二
氰基苯的反应,已经有效地制备了含有大 π 系统的 1,4-二取代苯。(© Wiley-
VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)。