Carboxylic acid to amide
Add ammonia
Ammonium salt is produced
Heat ammonium salt
Amide to nitrile
Strongly heat amide with dehydrating agent such as phosphorous (V) oxide
Halogenoalkane to nitrile
Add potassium cyanide in an ethanol solvent
Nucleophilic substitution
Ascends homologous series
Nitrile hydrolysis
Warmed with dilute sulfuric acid to from carboxylic acid
Amide hydrolysis
Warm with dilute sulphuric acid
Nitrile to amine
Reduction
Lithium tetrahydridoaluminate (III)