e , 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