1: With aluminium trichloride Friedel-Crafts acylation; 1 h; Heating; 2: With hydrogenchloride 2 h; 3: With sulfuric acid Friedel-Crafts acylation; 1.5 h; Heating; Further stages.;

(i) AlCl3, (ii) H2SO4; Multistep reaction;

1: HNO3 / 180 °C 2: SnCl2, aq. HCl View Scheme

1: HNO3 / 180 °C 2: SnCl2, aq. HCl 3: diethyl ether; methanol; H2O 4: (i) aq. NaOH, (ii) Zn, NH3, (iii) /BRN= 102415/, MeOH, H2O View Scheme