7-methoxy-1-methyl-3-methylidene-1-azaspiro[4.5]dec-6-ene

3-[methyl(3-methylbut-2-enyl)amino]cyclohex-2-en-1-one

3-methoxy-N-methylcyclohex-2-en-1-imine

3-[methyl(2-methylprop-2-enyl)amino]cyclohex-2-en-1-one

3-[methyl(2-methylprop-1-enyl)amino]cyclohex-2-en-1-one