77776-05-7Relevant academic research and scientific papers
Intraanular phenyl-substituierte Phane - Synthese und dynamische Stereochemie
Boeckmann, Klaus,Voegtle, Fritz
, p. 1048 - 1064 (2007/10/02)
The synthesis and properties of phanes of different ring size, substituted intraanularly by phenyl groups, and of new biphenylophanes 3, 38 - 43 with "pseudo-syn/anti"-structure are described.Barriers for the hindered rotation of intraanular phenyl substituents have been determined by D-NMR spectroscopy. syn/anti conformers of -, -, - and metacyclophanes are found.A better method for the preparation of mediocyclic bisdisulfides is reported.The pyrolysis of (2-biphenylyl)methyl sulfones leads to fluorenes; pyrolysis of the thiosulfonic S-ester 44 yields bibenzyl and dibenzyl sulfide.
