•
Couples with Grignards to give 2-bromo-1-alkenes, intermediates in the synthesis of terminal alkynes by dehydrobromination: Org. Synth. Coll., 1, 186, 191 (1941). Coupling of the vinylic bromide with a second organomagnesium molecule, mediated by a Ni complex, allows the introduction of two different substituents: Synthesis, 1034 (1987):

• Reacts with hexamethylenetetramine to give 2-bromoallylamine, and with primary amines, e.g. ethylamine, to give N-ethyl-2-bromoallylamines: Org. Synth. Coll., 5, 121, 124 (1973).