Enantioselective Dihalogenation of Alkenes

The dihalogenation of alkenes is one the classic reactions in organic chemistry and a prime example an electrophilic addition reaction. often observed anti-selectivity this reaction can be explained by formation haliranium-ion intermediate. Although dihalogenations have been studied for more than century, development reagent-controlled, enantioselective has proved to very difficult. Only recently, significant progress achieved. In review, overview on current method provided mechanistic aspects that render transformation challenging are discussed.