1: methyl 3-cyclopropyl-2,3-epoxypropionate With sodium hydroxide in water T=25°C; 3 h; 2: hydrogenchloride in water T=25°C; 1.5 h;

1: With sodium hydroxide in water T=25°C; 3 h; 2: With hydrogenchloride in water T=25°C; 1.5 h; 3: With sodium tetrahydroborate; sodium hydrogencarbonate more than 3 stages;

sodium methylate in methanol T=-10 - 20°C; 8 h;