dihydrogen peroxide; ozone 1.) Me2CO, water, 5 deg C, 30 min, 2.) Me2CO, water, 20 deg C, overnight; Yield given. Multistep reaction;

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.) n-BuLi / 1.) THF, hexane, -23 deg C, 2 h, 2.) THF, hexane, -23 deg C, 3 h<br />2: NH₃ / tetrahydrofuran; hexane / 0.25 h / 5 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 50 percent / acetic acid<br />2: 69 percent / KOH / ethanol; H₂O / 0.75 h / Heating<br />3: 1.) n-BuLi / 1.) THF, hexane, -23 deg C, 2 h, 2.) THF, hexane, -23 deg C, 3 h<br />4: NH₃ / tetrahydrofuran; hexane / 0.25 h / 5 &deg;C<br /> <br /> &nbsp;