Reductive coupling of 2,7-bis(bromomethyl)naphthalene using phenyllithium gave anti-(2,7)naphthalenophane, (2,7)naphthalenophane, and (2,7)naphthalenophane, the distribution of which was dependent on the reaction conditions. The structure of the first compound was established by X-ray crystallographic analysis. On the basis of the similarity between the NMR and UV spectra of (2,7)naphthalenophane with those reported for syn-(2,7)naphthalenophane, we conclude that the compound originally assigned to be syn-4 was in fact 6.
- Aromatic compounds
- Reductive coupling
- X-ray crystal structure analysis