hydrogen; Cu-chromit in 1,4-dioxane T=230°C; P=228000 Torr;

1: With potassium carbonate in water T=20°C; Michael addition; 3 h; 2: With dihydrogen peroxide; potassium carbonate in water T=20°C; Nef reaction; 3: With sodium tetrahydroborate; potassium carbonate in water T=20°C; 2 h;