Domino metathesis involving ROM-RCM of substituted norbornenes. Rapid access to densely functionalized tricyclic bridged and condensed ring systems.

Domino metathesis involving ROM-RCM of appropriately constructed norbornene derivatives having multiple alkene chains leads to direct access of highly functionalized bridged tricyclic compounds while that of a compound having two norbornene units tethered through one carbon produces a linearly arrayed condensed tricyclic system.