1-fluoro-4-[1-(4-fluorophenyl)ethenyl]benzene

4,4-dichloro-2-methylpent-1-ene

反-4-(4-甲氧苯基)-3-丁烯-2-酮

ethyl 3-chlorobut-2-enoate

1-chloro-2-[1-(4-chlorophenyl)ethenyl]benzene