sodium cyanoborohydride; zinc(II) iodide in 1,2-dichloro-ethane

1: 67 percent / H2SO4 / 1 h / 90 °C 2: 78 percent / zinc iodide; sodium cyanoborohydride / 1,2-dichloro-ethane View Scheme

1: 99 percent / AlCl3 / CS2 / 0.5 h / Heating 2: 67 percent / H2SO4 / 1 h / 90 °C 3: 78 percent / zinc iodide; sodium cyanoborohydride / 1,2-dichloro-ethane View Scheme