1: 84 percent / H2 / Pd/C / ethanol / 18 h / 760 Torr / Ambient temperature 2: 89 percent / TBAF / tetrahydrofuran / 1.) 0 deg C to r.t., 2.) r.t., 18 h View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1: 91 percent / imidazole / dimethylformamide / 12 h / Ambient temperature<br />2: 95 percent / Et₃N / CH₂Cl₂ / 1 h / 0 &deg;C<br />3: 83 percent / NaN₃ / dimethylformamide / 18 h / 80 &deg;C<br /> <br /> &nbsp;