(E)-1-thiophen-2-ylbut-2-en-1-one

prop-2-enyl 2,2-dichloroacetate

3-烯丙基戊烷-2,4-二酮

3,3-diallyl-2,4-pentanedione

2-methyl-2-prop-2-enylcyclohexane-1,3-dione