(i) NO2/HNO3, (ii) aq. KOH, MeOH; Multistep reaction;

1: 60 percent / 90percent HNO3 / 0.5 h / -2 - 2 °C 2: 95 percent / aq. NaOH / methanol / 0.5 h / Heating 3: 83 percent / K2CO3 / acetone / 84 h / Heating 4: 78 percent / p-toluenesulfonic acid monohydrate / benzene / 48 h / Heating 5: 96 percent / sodium acetate, H2 / PtO2 / ethyl acetate / 24 h / 2585.7 Torr View Scheme

1: 60 percent / 90percent HNO3 / 0.5 h / -2 - 2 °C 2: 95 percent / aq. NaOH / methanol / 0.5 h / Heating 3: 83 percent / K2CO3 / acetone / 84 h / Heating 4: 96 percent / hydroxylamine hydrochloride, HCOOH / 2 h / Heating 5: 88 percent / Fe powder, glacial acetic acid / propan-2-ol / 0.08 h / Heating 6: 73 percent / NaHCO3 / CHCl3 / 2 h / Heating 7: 11 percent / diethyl ether; dioxane / 4 h / Heating View Scheme

1: 60 percent / 90percent HNO3 / 0.5 h / -2 - 2 °C 2: 95 percent / aq. NaOH / methanol / 0.5 h / Heating 3: 83 percent / K2CO3 / acetone / 84 h / Heating 4: 67 percent / KMnO4 / acetone; H2O / 20 h / 50 °C 5: SOCl2 / 3 h / Heating 6: 1.) ethanol, Mg; / 1.) toluene, CCl4, reflux, 3 h, 2.) reflux, 3 h; 7: 100 percent / H2SO4 / aq. acetic acid / 7 h / Heating View Scheme