1: 2-chloro-5-(2-oxopropyl)-benzenesulphonyl-chloride With sodium hydrogencarbonate; sodium sulfate in water T=70°C; 1 h; 2: methyl iodide in N,N-dimethyl-formamide T=40°C; 1 h;

1: 2-chloro-5-(2-oxopropyl)-benzenesulphonyl-chloride With hydrogenchloride; sodium hydrogencarbonate; sodium sulfite in 1,4-dioxane; water T=70°C; 1 h; 2: methyl iodide in DMF (N,N-dimethyl-formamide) T=40°C; 1 h;

in DMF (N,N-dimethyl-formamide) T=20°C; 0.333333 h;

bromine in 1,4-dioxane T=20°C; 18 h;