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Abstract

The isomeric quinhydrones 1 and 2 as well as the bis(quinone) 6 of the [2.2]metaparacyclophane series were synthesized. Precursor of these products was the tetramethoxy[2.2]metaparacyclophane 3 which was prepared via 4 and 5. X‐ray structure analyses of 1, 3 and 6 are discussed with regard to the steric strain in these molecules and the donor‐acceptor orientation in 1. Charge‐transfer absorptions of 1 and 2 are reported as well as circular dichroism of 1 which was separated into enantiomers. — Following an analogous route the isomeric quinhydrones 13 and 14 as well as the bis(quinone) 15 of the [3.3]metaparacyclophane series were prepared. The difference in steric strain of the [3.3]‐ in comparison to the [2.2]metaparacyclophane series is discussed on the basis of an X‐ray structure analysis of 13. Charge‐transfer absorptions of 13 and 14 are reported.