2,2-Dimethylcyclopentanone enolate may be used as starting reagent in the enantioselective synthesis of chiral phosphines belonging to the P-aryl-2-phosphabicyclo[3.3.0]octane family (PBO).It may be used in the synthesis of:2,6,6-trimethyl-2-azaspiro[4.4]nonane-1,3-dione,a spirosuccinimide moiety of asperparaline Anovel spiropentanopyrrolizidine oxime alkaloids, namely 2′,3′,5′,6′,7′,7a′-hexahydro-2,2-dimethylspirocyclopentane-1δ,δ-dimethyl-δ-valerolactone, via Baeyer-Villiger oxidation
