The photoinduced carbonyl ylides B and C from the α,β-unsaturated γ,δ-epoxy dinitriles 2 and 3 undergo 1,3-dipolar cycloaddition with enol ethers, leading regioselectively to the 8-oxabicyclo[3.2.1]octane system.
No takes yet. Share an insight, caveat, or question.
Kotera et al. (1994) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: