Sl. Gwaltney et al., BRIDGED TO FUSED-RING INTERCHANGE - NEW METHODOLOGY FOR THE CONSTRUCTION OF FUSED CYCLOHEPTANES AND CYCLOOCTANES, Tetrahedron letters, 36(40), 1995, pp. 7177-7180
The type two intramolecular Diels-Alder cycloaddition coupled with a b
ridged to fused interchange provides an efficient method for synthesis
of fused 5,7 and 5,8 ring systems.