A Guidebook to Mechanism in Organic Chemistry - Peter Sykes - 6ed
Addition of Br 2 and Cl 2. Stereochemistry Anti Addition (halogens enter on opposite sides); Stereoselective Syn addition (on same side) does not occur.
Chapter 5
Chapter 5 Addition Reaction of Alkenes. Addition of Halogens to Alkenes Addition of Cl 2 and Br 2 to give vicinal dihalides. The other halogens are not.