Yield given. Multistep reaction;

carbon tetrabromide; ethylenediamine; triphenylphosphine 1.) CH2Cl2, room temp., 1 h, 2.) DMSO, 8 deg C; Multistep reaction;

1: 1.) CBr4, Ph3P, 2.) (NH2CH2)2 / 1.) CH2Cl2, room temp., 1 h, 2.) DMSO, 8 deg C 2: 1.) n-BuLi / 1.) THF 3: 2.) LiAlH4 / 1.) Et2O, -70 deg C, 2.) Et2O, 0 deg C, 3 h View Scheme