β-oxo-α-(2-propenyl)benzenepropanoic acid ethyl ester

3-carbethoxy-4,5-dihydro-2-phenyl-5-<(phenylseleno)methyl>furan

3-carbethoxy-4,5-dihydro-2-phenyl-5-methylenefuran

ethyl (E)-2-benzoyl-4-oxopent-2-enoate

ethyl 1-methyl-4-phenyl-2,3,7-trioxabicyclo[2.2.1]hept-5-ene-5-carboxylate