zinc(II) chloride in chloroform 0.0833333 h; Ambient temperature;

in chloroform 0.0833333 h; Ambient temperature;

1: 3-methylsulfanyl-propionaldehyde; 3-(methylseleno)-propionaldehyde With sodium hydrogensulfite in water T=20°C; 0.166667 h; 2: sodium cyanide in water T=20°C; 2 h; Reflux; 3: With hydrogenchloride; water 5 h; Reflux;

1: 3-methylsulfanyl-propionaldehyde; 3-(methylseleno)-propionaldehyde With sodium hydrogensulfite in water T=20°C; 0.166667 h; 2: sodium cyanide in water T=20°C; 2 h;