The [2.1.2.1]paracyclophanedienes 9-11 were prepared in good yields by a McMurry cyclization of the bis(4-acylphenyl)methanes 5 and 6 and of bis(4-acetylphenyl) ether (7), respectively.
The [2.1.2.1]paracyclophanedienes 9-11 were prepared in good yields by a McMurry cyclization of the bis(4-acylphenyl)methanes 5 and 6 and of bis(4-acetylphenyl) ether (7), respectively.