Carbon–carbon bond formation

Nucleophilic substitution of haloalkanes with cyanide ions

Please refer to Nucleophilic substitution under Haloalkanes

Addition of hydrogen cyanide to carbonyls to form hydroxynitriles

Please refer to nucleophilic addition under Carbonyl compounds

Friedel Crafts Alkylation and acylation

Please refer to Electrophilic substitution of benzene under Aromatic compounds