Fluorene-binaphthyl

So erhalt man beispielsweise bei der Nitrierung von Fluoren, Fluoranthen, Binaphthyl oder Triphenylen mit Distickstofftetroxid in Dichlormethan in Gegenwart von Methan-sulfonsaure in 0,5 bis 2 h die entsprechenden Nitro-arene in ausgezeichneter Ausbeute3,4 z.B. ... 

Previous, unsuccessful attempts to demonstrate the principle of a molecular switch based on CPL irradiation include inherently dissymmetric fluorene derivative l,1161 atropisomeric bridged binaphthyls 2,1171 and l,l -binaphthylpyran 3J18 Inefficient photoracemization, low g-values, and insufficient sensitivity for detection were some of the problems encountered. 

Wang, Y.-H., Bailey, J.F., Petersen, J.L. and Wang, K.K. (2011) Synthesis of 5-(2-methoxy-l-naphthyl)- and 5-[2-(methoxymethyl)-l-naphthyl]-llH-benzo[f)]fluorene as 2,2 -disubstituted l,l -binaphthyls via benzannulated enyne-allenes. Beilstein Journal of Organic Chemistry, 7, 496-502. 

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