lithium aluminium tetrahydride in diethyl ether T=0°C; 2 h;

1: 20 percent / tetrahydrofuran / 24 h / Irradiation 2: 25 percent / LiAlH4 / diethyl ether / 2 h / 0 °C View Scheme

1: 2.) 10percent H2SO4 / 1.) 70 deg C, 1 h, 2.) H2O, 90 deg C, 2 h 2: 20 percent / tetrahydrofuran / 24 h / Irradiation 3: 25 percent / LiAlH4 / diethyl ether / 2 h / 0 °C View Scheme

1: 2.) 10percent H2SO4 / 1.) 70 deg C, 1 h, 2.) H2O, 90 deg C, 2 h 2: 20 percent / tetrahydrofuran / 24 h / Irradiation 3: 25 percent / LiAlH4 / diethyl ether / 2 h / 0 °C View Scheme