The reactions studied may be divided into two classes:(1) those in which the bromine is removed or replaced;(2) addition reactions. Reactions of class (1) have been confined to the action of bases in different solvents and of alkali metals in liquid ammonia. Reactions of class (2) include the action of a variety of reagents such as the halogens, oxygen, sulfur, etc. Action of Bases.-Like the monobromoolefins the dibromoolefins are relatively stable ...