1.1: 45 percent / Et3N / ethanol / 16 h / Heating 2.1: LHMDS / tetrahydrofuran / 1 h / -78 °C 2.2: 94 percent / tetrahydrofuran / 16 h / -78 - 20 °C 3.1: 65 percent / t-BuOK / tetrahydrofuran / 8.5 h / -78 °C 4.1: LDA / hexane; tetrahydrofuran / -78 - 0 °C 4.2: hexane; tetrahydrofuran / 8.5 h / -78 - -30 °C 4.3: 75 mg / ammonium formate / Pd(OH)2/C / ethanol / 4 h / Heating 5.1: 88 percent / LiAlH4 / tetrahydrofuran / 16 h / Heating View Scheme

potassium phosphate; 1,3-(4-Ph-OMe)2-5-Ph-1,3,4-triazinium perchlorate in ethylene glycol dimethyl ether T=80°C; 8 h;

sodium iodide in acetone 24 h; Heating;