(E)-4,5-dihydro-3-(p-tolylsulfonyloxymethylene)-2(3H)-furanone

chlorozinc(1+),2H-furan-2-ide

糠醛

α-溴-γ-丁内酯

二氢-3-(三苯基膦亚基)-2(3H)-呋喃酮