Exploration of Ring Rearrangement Metathesis Reaction: A General and Flexible Approach for the Rapid Construction [5,<i>n</i>]-Fused Bicyclic Systems en Route to Linear Triquinanes
[5,n] bicyclicsystems with cis ring junction stereochemistry were accessed readily through RRM (ring rearrangement metathesis) reaction of properly functionalized [2.2.1]norbornene skeletons. Several bicyclic enones, ketones, alcohols, and ethers acted as the substrates and yielded the respective linearly fused [5,n] bicyclicsystems stereoselectively after the RRM reaction. Such [5,5]bicyclic enone