Abstract:
Lucas (Lucas, J.A.C.S., 1925, 2475) first suggested that electron displacement might
influence halogen addition, and Burton and Ingold (Burton and Ingold, J.C.S., 1928, 1894) first
formulated an orientation theory for conjugative addition.
After this, knowledge concerning the mechanisms of organic halogenations developed rapidly, and by 1931, Ingold and Ingold (Ingold and Ingold, J.C.S., 1931, 2359)
were able to put forward a general theory of the mechanism of
halogen addition to compounds containing an ethylene link.