Under free radical conditions the direction of the addition can be reversed, as is used commericially for the synthesis of 1-bromoalkanes, precursors to tertiary amines and quaternary ammonium salts.
The direction of the addition can be reversed, as is used commericially for the synthesis of 1-bromoalkanes to tertiary amines and quaternary ammonium salts. This was under free radical conditions. Bromoalkanes are precursors.