Halogenation & Halohydrin Formation

Halogenation of alkenes using Xs:

Halogenation Mechanism

Halogenation: Because the nucleophilic attack of Br^- goes via an ______ (________) the product of the addition reaction is ______

SN2 (backattack) → antiaddition

Halogenation: The reaction is ______! Different starting steroisomers (E or Z) led to different products:

Stereospecific

Halogenation: The more _______ X and ________ the alkene the alkene, the faster the halogenation

electronegative → substituted

Halohydrin Formation:

Halohydrin Mechanism:

Halohydrin: The nucleophilic attack of H2O happens on the __________ carbon of the halonium ion

-It is an _______ of OH & X

-_________ can also be used as nucleophiles instead of H2O, to form _______

-most substituted

-Anti-addition

-Alcohols → ethers

Epoxide formation