, by treating with acetyl
chloride or acetic anhydride Tertiary amines like trimethylamine are used as insect
attractants Aryldiazonium salts, usually obtained from arylamines, undergo replacement of
the diazonium group with a variety of nucleophiles to provide advantageous methods
for producing aryl halides, cyanides, phenols and  arenes by reductive removal of the
diazo group Coupling reaction of aryldiazonium salts with phenols or arylamines give
rise to the formation of azo dyes