diisobutylaluminium hydride in hexane; dichloromethane T=-78 - 22°C; 16 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.) t-BuLi, 3.) 0.2 M HCl / 1.) THF, pentane, -65 deg C to 0 deg C, 15 min, 2.) -65 deg C to room temperature, 14 h, 3.) acetone, H₂O, 1 h<br />2: 14 percent / 1,1,1,3,3,3-hexamethyldisilazane, BuLi / tetrahydrofuran; hexane / 1.) 0 deg C, 20 min, 2.) -78 deg C, 15 min, 3.) -78 deg C, 1 h<br /> <br /> &nbsp;