1: 1.) MeLi / 1.) THF, Et2O, a) -78 deg C, 1 h, b) RT, 3 h, 2.) THF, Et2O, RT, 17 h 2: 1.) CuI / 1.) THF, Et2O, from -10 deg C to 0 deg C, 2.) THF, Et2O, -78 deg C, 7.5 h 3: LiAlH4 / diethyl ether / 6 h / Ambient temperature View Scheme