Novel Syntheses of Decacyclene by Deoxygenating Cyclotrimerisation of Acenaphthenequinone with Zero-valent Titanium or Phosphorus Pentasulfide
作者:Klaus Zimmermann、Matthias Haenel
DOI:10.1055/s-1997-3209
日期:1997.5
Decacylene (2) was obtained in 15-21% yield by reaction of acenaphthenequinone (6) with bis(η6-biphenyl)titanium(0) (9) in toluene or diglyme at 110°C and in 18% yield by reaction of 6 with phosphorus pentasulfide in boiling toluene. The new reactions are used to attempt the conversion of 3,8-dibromoacenaphthenequinone (7) to 3,4,9,10,15,16-hexabromodecacyclene (3) which is considered to serve as a suitable precursor for the bowl-shaped polycyclic aromatic hydrocarbon C36H12 (1).
苊醌(6)与双(δ-6-联苯)钛(0)(9)在 110°C 的甲苯或二甘醇中反应得到癸二烯(2),收率为 15-21%;6 与五硫化磷在沸腾的甲苯中反应得到癸二烯(2),收率为 18%。这些新反应被用来尝试将 3,8-二溴苊醌 (7) 转化为 3,4,9,10,15,16-六溴癸环烯 (3),后者被认为是碗形多环芳烃 C36H12 (1) 的合适前体。