hydrogenchloride; copper(l) chloride; sodium nitrite 1.) 2 deg C, 20 min, 2.) H2O, a) 2 deg C, 35 min, b) from RT to 55 deg C, 100 min; Yield given. Multistep reaction;

1: 45.7 percent / H2 / Raney Ni / aq. acetic acid / Ambient temperature 2: 93 percent / CF3COOH / CHCl3 / 3 h / Ambient temperature View Scheme

hydrogen; nickel T=28°C; P=2585.7 Torr; 22 h;