1: 2-methyl-5-bromo-1,3-pyrimidine With iron sulphate heptahydrate; sulfuric acid in water; toluene T=-10°C; Minisci reaction; 2: α-hydroxy-α-(ethoxycarbonyl)ethyl hydroperoxide With acetic acid in water; toluene T=-10 - 0°C; Minisci reaction; 1.5 h; 3: With sodium hydroxide in water; toluene pH=7; Cooling with ice; regioselective reaction;