343858-59-3Relevant academic research and scientific papers
New Helical Hydrocarbons, V. Double Clamped Pentaphenylenicenes
Hammerschmidt, Erich,Voegtle, Fritz
, p. 3550 - 3556 (2007/10/02)
The synthesis and properties of the pentaphenylenicenes 3 and 4 clamped singly in the 2,2''''- and twice in the 2,4''''; 4,2''''-positions, are reported.Spectroscopic results lead to the assumption of helically wound hydrocarbon skeletons.In the course of the synthesis of the bis-sulfide 11 a symmetric isomer (11b) apart from a helical one (11a) seems to be formed.
