1: 2-hydroxymethylnitrobenzene With peracetic acid; C9H17NO5S(1-)*C11H12IN2(1+); acetic acid in hexafluoroisopropyl alcohol T=20°C; 16 h; 2: (2,4-dinitro-phenyl)-hydrazine With sulfuric acid in diethyl ether; ethanol; water

toluene-4-sulfonic acid in toluene Heating;

ethanol; sulfuric acid

1: 49 percent / toluene / 1 h / Heating 2: 99 percent / p-TsOH / toluene / Heating View Scheme

1: alcohol; hydrazine hydrate 2: diluted sulfuric acid; alcohol View Scheme