diazomethane
(2Z,4E)-3-methyl-5-(2',6',6'-trimethylcyclohex-1'-en-1'-yl)-2,4-pentadienoic acid
5,4-Dihydro-4-methyl-6-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2H-pyran-2-one
5-hydroxy-4-methyl-5H-furan-2-one
triphenyl((2,6,6-trimethylcyclohex-1-enyl)methyl)phosphonium bromide