SO.sub.2 C.sub.6 H.sub.4 CH.sub.3)The compounds of general formula II are prepared, starting from the compounds of formula XVII, by reacting with bromoketones of general formula XX ##STR20##Excess amine of general formula XVII or alkali, such as e.g. soda or potassium bicarbonate, is used as the binder for the hydrogen bromide formed during the reaction.Aminoketones of general formulae XXI, XXII a