SEARCH Articles Figures Tables A-halogenated A-halogenation And exchange reactions Enamine reaction Enamine, intermediate Enamines as intermediates Enamines as reaction intermediates Enamines halogenation Exchange isotopic Exchange reactions halogens Halogen exchange Halogenation reactions In halogenation Intermediate exchange Intermediates in reaction Isotope exchange reactions Isotopes exchange Isotopic exchange and Reactions a-halogenation Reactions halogens