ethyl 1-cyano-2-ethenylcyclopropane-1-carboxylate

[(E)-4-phenylsulfanylbut-2-enyl]sulfanylbenzene

2-azidoacetaldehyde

dimethyl 2-(4-bromobut-2-enyl)-2-but-1-ynylpropanedioate

2-ethenylcyclopropane-1,1-dicarbonitrile