A New Synthesis of γ-Lactones with α,β-Fused Ring Systems Using α-Diethoxyphosphinyl-Δα,β-butenolides

Article abstract of DOI:10.1246/cl.1987.2369

The intramolecular Wittig-Horner reaction of α-diethoxyphosphinyl-Δ^α,β-butenolides with various nucleophilic reagents containing the carbonyl group produced α,β-carbocyclic fused-γ-lactones in moderate yields.