1: 70 percent / sulfuric acid / ethanol / 1 h / 100 - 120 °C 2: 65 percent / hydrogen / palladium on charcoal / tetrahydrofuran / 20 °C / atmospheric pressure View Scheme

1: 74 percent / 98percent sulphuric acid / ethanol; acetic acid / 6 h / Heating 2: 97 percent / hydrogen / Raney nickel / ethanol 3: 1.) sodium nitrite, conc. hydrochloric acid, 2.) sodium azide, sodium acetate / 1.) water, 0 deg C, 2.) 1 h 4: 83.5 percent / bis-(2-methoxy-ethyl) ether / 162 °C View Scheme

1: 97 percent / 98percent sulphuric acid / ethanol; acetic acid / 6 h / Heating 2: 86 percent / sodium hydrogencarbonate, pyridine / H2O / Heating View Scheme

1: ethanol / 1 h / 20 °C 2: 72 percent / hydrogen / Pt/C / ethanol / 20 °C View Scheme