Organic Chemistry/Introduction to reactions/Halohydrins

Halohydrins are formed in addition reactions with alkenes, and either an aqueous solution of a halogen or the corresponding hypohalous acid (eg HOBr or HOCl).

Formation of a halohydrin from an alkene, using an aqueous bromine solution

Halohydrin formation uses a cyclic bridged ion as an intermediate. Because of this, the stereochemistry of the reaction process is anti.