5,6,17,18-Bisdehydrotetrathia[24]annulene[2.2.2.2], synthesized through a sequence of the McMurry coupling of 1,1-dichloro-2,2-di(5-formyl-2-thienyl)ethene and a novel double Fritsch-Buttenberg-Wiechell rearrangement, has a planar X-ray structure with bent triple bonds and short S-S contacts but shows little sign of peripheral conjugation.
5,6,17,18-双脱氢四
硫杂[24]
蒽[2.2.2.2]是通过 1,1-二
氯-2,2-二(5-甲酰基-2-
噻吩基)
乙烯的麦克马里偶联和新型双弗里奇-布滕伯格-维切尔重排顺序合成的,具有平面 X 射线结构,三键弯曲,S-S 接点短,但几乎没有外围共轭的迹象。