2,3,4,5-tetraethylcyclopent-2-en-1-one

5-ethyloct-5-en-2-one

3-(2,2-dimethylpropoxy)-1,2-diethylcyclopropene

4,5-二乙基吡咯[1,2-a]喹啉

3-chlorohex-3-ene