1: p-toluidine With hydrogenchloride; sodium nitrite in methanol; water Diazotization; 0.166667 h; 2: benzyl 2-chloro-3-oxobutanoate in methanol; water T=0 - 20°C; Substitution; pH=5; 17 h;

in 1,4-dioxane T=20°C; 18 h;