1: thiophenol With triethylamine in water 0.0833333 h; Green chemistry; 2: 2-amino-3-chloro-1,4-dihydro-1,4-dioxonaphthalene in water T=60°C; Green chemistry;

hydrogenchloride; sodium azide in methanol; water 15 h; Ambient temperature;

aluminum oxide in neat (no solvent) T=20°C; 4 h; Green chemistry; regioselective reaction;