Alcohols undergo a number of reactions involving the cleavage of C−O bond. We have already discussed such reactions in preparation
of haloalkanes from alcohols. These reactions with required product (i.e., without by-products) are given in the table below for quick revision. For details, refer to
preparation of haloalkanes from alcohols.
Reaction with zinc dust
Phenol (not alcohol) is reduced to benzene when it is distilled with zinc dust.