Cyclopentadienylcobalt-Mediated Intermolecular Cycloaddition of α,ω-Diynes to (Cyclo)alkenes: Synthesis of Linearly Fused Oligocycles and Extension to Enantiomerically Pure (6aR,10aR)-Dihydroanthracyclinones

The generality of the [CpCoL 2 ]-mediated [2+2+2] cycloaddition of α,ω-diynes to (cyclo)alkenes has been extended to include linear oligocycles as models for the one-step, A + D → ABCD construction of optically pure, novel 6,10-dihydroanthracyclinones.