1.1: 65 percent / t-BuOK / tetrahydrofuran / 8.5 h / -78 °C 2.1: LDA / hexane; tetrahydrofuran / -78 - 0 °C 2.2: hexane; tetrahydrofuran / 8.5 h / -78 - -30 °C 2.3: 75 mg / ammonium formate / Pd(OH)2/C / ethanol / 4 h / Heating 3.1: 88 percent / LiAlH4 / tetrahydrofuran / 16 h / Heating View Scheme