in tetrahydrofuran byproducts: CO; Irradiation (UV/VIS); irradn. a 400-W high pressure mercury lamp with stirring under argon for 30 min; removal of solvent with a rotary evaporator, purifn. by flash column chromatography, NMR, elem. anal.;

ammonia

in tetrahydrofuran T=20°C; 2 h; Inert atmosphere;

1: lithium / tetrahydrofuran / 1 h / 20 °C / |Schlenk technique; |Inert atmosphere 2: hexane; tetrahydrofuran / 16 h / 20 °C / |Schlenk technique; |Inert atmosphere 3: toluene; tetrahydrofuran / 16.17 h / -20 °C / |Glovebox; |Inert atmosphere 4: tetrahydrofuran / 2 h / 20 °C / |Inert atmosphere View Scheme

in ethylene glycol dimethyl ether room temperature;

in ethylene glycol dimethyl ether room temperature;

1: hexane; tetrahydrofuran / 16 h / 20 °C / |Schlenk technique; |Inert atmosphere 2: toluene; tetrahydrofuran / 16.17 h / -20 °C / |Glovebox; |Inert atmosphere 3: tetrahydrofuran / 2 h / 20 °C / |Inert atmosphere View Scheme