Synthesis of Novel Spiro[Oxirane-Pyrrolizin] Derivatives by Epoxidation of α,β-Unsaturated Pyrrolizinone with Cyclohexylidenebishydroperoxide

A simple epoxidation of E-2-(arylmethylidene)-2,3-dihydro-1H-pyrrolizin-1-ones was accomplished using cyclohex ylidenebishydroperoxide as the oxygen source. A number of 3-arylspiro[oxirane-2,2′-pyrrolizin]-1′(3′H)-ones were obtained in moderate to good yields.