(v) Reduction of alkyl halides



reduction can also be done by a. LiAlH₄ b. Na/C₂H₅OH c. Zn – Cu Couple

Zn – Cu couple is Zn wetted by Cu. It is prepared by putting CuSO₄ on Zn granules present in flask which leads to Cu deposition on them.
(vi) Wurtz Reaction


Two following mechanism have been suggested for wurtz reaction:


If we take one alkyl and one aryl group, this is known as wurtz fittig reaction (practically possible)


(vii) Sabatier Senderon’s Reduction (Hydrogenation of alkyne or alkenes)


(viii) Decarboxylation by Sodalime (NaOH + CaO)