Method by which aniline cannot be prepared is
degradation of benzamide with bromine in alkaline solution
reduction of nitrobenzene with H2 / Pd in ethanol
potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution
hydrolysis of phenylisocyanide with acidic solution.
Aniline cannot be prepared by this method because aryl halides do not undergo nucleophilic substitution reaction with potassium phthalimide under mild conditions.