1: water; iron; ammonium chloride / isopropyl alcohol / Reflux 2: N-ethyl-N,N-diisopropylamine / dichloromethane; N,N-dimethyl-formamide / 0 - 20 °C 3: dihydrogen peroxide; sodium hydroxide / ethanol; water / 2 h / Reflux 4: N,N-diethylaniline; trichlorophosphate / 4 h / Reflux 5: N-ethyl-N,N-diisopropylamine / isopropyl alcohol / 0.25 h / 160 °C / Microwave irradiation 6: palladium 10 on activated carbon; cyclohexa-1,4-diene / ethanol / 2 h / Reflux 7: di-isopropyl azodicarboxylate; triphenylphosphine / tetrahydrofuran / 20 °C / Inert atmosphere View Scheme

sodium dithionite; Na2S2O4; tetrabutyl-ammonium chloride; sodium hydrogencarbonate in methanol; dichloromethane; water