ethene

(Z)-2,2'-(pent-2-ene-1,4-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane)

1-bromotricyclo[3.2.1.02,7]octan-3-one

1-bromobicyclo[3.2.1]oct-2-en-7-one

(Z)-2-methoxy-1,3-pentadiene