1: With potassium tert-butylate in diethyl ether T=0°C; 1.5 h; 2: With hydrogenchloride in diethyl ether; water 0.5 h; 3: With Carbamonitrile in diethyl ether; water T=100°C; 1 h;

hydrogenchloride; sodium formate; acetic anhydride in formic acid; diethyl ether; water

1: C6H8NO4(1-)*Na(1+); ethanol With hydrogenchloride; water T=110°C; 1.5 h; 2: Carbamonitrile With sodium acetate; acetic acid in water T=90 - 100°C; 1.5 h; 3: With hydrogenchloride; potassium carbonate Product distribution / selectivity; more than 3 stages;

acetic acid; sodium nitrite in water T=-5 - 20°C;