1: anthranilic acid With hydrogen cation; sodium nitrite Diazotization; decarboxylation, N2 elimination; 2: methyl 3-acetyl-4-hydroxy-6-amino benzoate T=80°C; Arylation;

in 1,2-dichloro-ethane Heating;

(i) aq. NaNO2, H2SO4, EtOH, (ii) Cu; Multistep reaction;