propane-1,3-diamine potassium salt

1: H2, 1,2-diaminoethane / P2-Ni / ethanol 2: 85 percent / PPh3, CBr4 / CH2Cl2 / 1.) from 0 deg C to 20 deg C, 1 h, 2) 20 deg C, 14 h 3: 1.) butyllithium, HMPA, 2.) HMPA / 1.) THF, hexane, -20 deg C, 1 h, 2.) RT, 4 h 4: Dowex W-50 (H+ form) / methanol / 16 h 5: 83 percent / lithium alanate / tetrahydrofuran / 10 h / 60 °C View Scheme

1: H2, 1,2-diaminoethane / P2-Ni / ethanol 2: 85 percent / PPh3, CBr4 / CH2Cl2 / 1.) from 0 deg C to 20 deg C, 1 h, 2) 20 deg C, 14 h View Scheme