1: 2-bromoacetaldehyde diethyl acetal With water; hydrogen bromide 0.666667 h; Heating / reflux; 2: 2-(3-amino-1,2,4-triazin-5-yl)propan-2-ol; 2-(3-amino-[1,2,4]triazin-6-yl)propan-2-ol 6 h; Heating / reflux;