Tandem RCM-Pauson–Khand reaction for access to tricycles in one stepElectronic supplementary information (ESI) available: spectral data and 1H-NMR and 13C-NMR spectra for compounds 8, 10, 11, 14a and 14b. See http://www.rsc.org/suppdata/ob/b3/b302277c
Tandem RCM-Pauson–Khand reaction for access to tricycles in one stepElectronic supplementary information (ESI) available: spectral data and 1H-NMR and 13C-NMR spectra for compounds 8, 10, 11, 14a and 14b. See http://www.rsc.org/suppdata/ob/b3/b302277c
The combination of ring-closing metathesis (RCM) followed by an intramolecular Pauson–Khandreaction gives direct entry to tricyclic compounds. The RCM was carried out on a hexacarbonylcobalt-complexed alkyne, this complex acting as a protecting group against enyne metathesis. The procedure was studied for dienynes containing heteroatoms and allows the building of [6,5,5] and [7,5,5] tricyclic systems