1: 81 percent / Et3N / acetonitrile / 12 h / Ambient temperature 2: 86 percent / LiAlH4 / tetrahydrofuran; diethyl ether / 2 h / Heating 3: 1.) NaH, 2.) 15-crown-5 / 2.) toluene, reflux, 24 h 4: 2N HCl / tetrahydrofuran / 2 h / 70 °C View Scheme

1: 81 percent / Et3N / acetonitrile / 12 h / Ambient temperature 2: 86 percent / LiAlH4 / tetrahydrofuran; diethyl ether / 2 h / Heating View Scheme

triethylamine in acetonitrile 12 h; Ambient temperature;