tert.-butylhydroperoxide; sulfuric acid; iron(II) sulfate in water T=10 - 20°C; 0.25 h;

hydrogenchloride; 2-oxo-propionic acid in ethanol 6 h; Heating;

1: 66 percent / diethyl ether 2: 80 percent / propyl nitrite, HCl / ethanol / 2 h / Ambient temperature 3: 95 percent / pyruvic acid, conc. HCl / aq. ethanol / 6 h / Heating View Scheme

1: 80 percent / propyl nitrite, HCl / ethanol / 2 h / Ambient temperature 2: 95 percent / pyruvic acid, conc. HCl / aq. ethanol / 6 h / Heating View Scheme