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Preparation of 13-to 19-membered carbocycles (metacyclophanes) from 1,3-disubstituted benzene derivatives has been successfully carried out using the RCM reaction, but similar starting materials having diphenyl ether did not cyclize to 15-membered compounds, whose ground state conformations were calculated and discussed. Several attempts to cyclize to form platycarynol are described.

Das Cyanodihydro cyclobutachinolinon (I) reagiert mit den Olefinen (II) zu Gemischen von cis‐ und trans‐Produkten (III) und (IV), wobei das Verhältnis der Isomeren durch Erhitzen in Pyridin nahezu umgekehrt werden kann.

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