Conformational study of the higher [n.n]paracylophanes: evaluation as potential hosts for molecular halogens and benzenes
摘要:
A fundamental study of the conformations of [7.7]-, [8.8]-, [9.9]-, [11.11]- and octamethyl[8.8]-paracyclophanes in the solid state shows that the [odd,odd] members of the series possess parallel, symmetrically disposed benzene rings. A new genre of inclusion phenomenon based on donor-halogen EDA interactions is also defined and the potential of cyclophanes to act as hosts both in this capacity and to benzenes is discussed.
The long and the short of it: An atom‐economicalroute to α,ω‐diarylalkanes from ω‐arylalkanols was achieved by a direct one‐step method, or a sequential two‐step method depending on the alkyl chain length. The reaction proceeded through the formation of β‐methylhydroxy‐α,ω‐diarylalkanes by dehydrogenation/β‐alkylation, followed by dehydrogenation/decarbonylation.