It can be produced by hydrolysis of 4-chloro
benzal chloride: : It can also be produced by the oxidation of
4-chlorobenzyl alcohol. It can be further oxidized to
4-chlorobenzoic acid. It will react with
malononitrile to form 4-chlorobenzylidenylmalononitrile. 4-Chlorobenzaldehyde reacts with
benzylamine to produce
N-(4-chlorobenzylidenyl)benzylamine. ==Applications==