1: 79 percent / aq. ammonia / tetrahydrofuran / 1 h / 20 °C 2: 91 percent / KOH / methanol 3: 88 percent / pyridine / 2 h / 20 °C 4: 63 percent / sodium azide / dimethylformamide / 2 h / 40 °C 5: H2 / Pd/C / ethanol / 1 h / 20 °C 6: ethanol / 1 h / 20 °C 7: 2.30 g / H2 / ethanol / 2 h View Scheme

1: 79 percent / aq. ammonia / tetrahydrofuran / 1 h / 20 °C 2: 91 percent / KOH / methanol 3: 88 percent / pyridine / 2 h / 20 °C 4: 63 percent / sodium azide / dimethylformamide / 2 h / 40 °C 5: H2 / Pd/C / ethanol / 1 h / 20 °C View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: 21 percent / glucose / baker's yeast / H₂O / 72 h / 20 &deg;C<br />2: 86 percent / H₂; HClO₄ / Pd/C / ethanol / 20 &deg;C / atmospheric pressure<br />3: 90 percent / pyridine<br />4: 85 percent / chlorosulfonic acid / 1 h / 0 &deg;C<br /> <br /> &nbsp;