The final step of one reaction of this type converts raney nickel into two nickel disulfides and is 
The final step of one reaction of this type converts raney nickel into two nickel disulfides and is named for a Merck chemist, Mozingo. Another of these reactions creates a cyclohexadiene from an aromatic ring, and is commonly performed in liquid ammonia. Usually, a hydrazone is formed and nitrogen gas is emitted in two intermediate steps of one of these reactions named for Wolff and Kishner. Hydrogenations are a type of, for 10 points, what reactions in which a compound gains electrons, and which are commonly contrasted with oxidations?