1: ethyl 2-(4-amino-3-nitrophenyl)acetate With hydrogen; palladium 10 on activated carbon in methanol T=20°C; 6 h; 2: 2,3-dihydroxy-1,4-dioxane in methanol T=20°C; 2 h;

1: 4-amino-3-nitrophenylacetic acid With palladium 10 on activated carbon; hydrogen in methanol T=20°C; 6 h; 2: 2,3-dihydroxy-1,4-dioxane in methanol T=20°C; 2 h;

lithium aluminium tetrahydride in diethyl ether T=20°C; 3.5 h;