<unk>  bromide and related alkenyl<unk> s form the Grignard reagent and related organolithium reagents. Alkenyl<unk> s undergo base elimination to give the corresponding alkyne. Most important is their use in cross-coupling reactions (e.g. Suzuki-Miyaura coupling, Stille coupling, Heck coupling, etc.).
Vinyl halide
Vinyl chloride
Alkylphenol
Hydrogen fluoride
Naphthalene
Nitrobenzene
Lewisite
Benzene