1: 1) diisopropylamine, n-butyllithium / 1) THF, hexane, -78 deg C, 1 h, 2) -78 deg C, 20 min 2: 92 percent / H2 / 5percent Pd on CaCO3 / ethanol / 0.5 h / 760 Torr View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 1) n-butyllithium / 1) HMPA, hexane, 0 deg C, 30 min, 2) 0 deg C, 4 h<br />2: 100 percent / diethyl ether / 4 h / Ambient temperature<br /> <br /> &nbsp;