1: 38 percent / conc. H2SO4 / 1.) RT, 16 h, 2.) 60 deg C, 2 h 2: pyridine / 20 h / Heating View Scheme

1: 38 percent / conc. H2SO4 / 1.) RT, 16 h, 2.) 60 deg C, 2 h 2: pyridine / 20 h / Heating 3: 48percent HI / 20 h / Heating View Scheme

1.1: 58 percent / NH3(liquid); Na; iron nitrate nonahydrate / acetone / 2 h / Heating 2.1: 94 percent / Et3N / CH2Cl2 / 0.5 h / 20 °C 3.1: TMEDA; n-BuLi / tetrahydrofuran; hexane / 2 h / 0 °C 3.2: 48 percent / ethanol; hexane / 2.5 h / -78 - 20 °C 4.1: 99 percent / HCl / 1,2-dimethoxy-ethane / 5 h / Heating 5.1: 90 percent / p-TsOH*H2O / methanol / 6 h / Heating 6.1: 91 percent / NaH; O-(diphenylphosphinyl)hydroxylamine / tetrahydrofuran / 0.75 h / 0 - 20 °C 7.1: H2SO4 / H2O / 4 h / 20 - 85 °C View Scheme