An efficient butenolide annulation via α'-chloroacetoxylation of enones using manganese(III) acetate and chloroacetic acid

Article abstract of DOI:10.1055/s-1991-26555

The α'-chloroacetoxylation of α,β-unsaturated ketones using manganese(III) acetate and chloroacetic acid followed by Arbuzov reaction and intramolecular Horner-Emmons olefination provided a convenient synthesis of annulated 2-buten-4-olides.