Dimethyl Sulfate → HCID 178493585, Verbindung

Reaktionsgleichung

[CH3:1][O:2][C:3]1[N:8]=[C:7]([OH:9])[CH:6]=[C:5]([OH:10])[N:4]=1.[OH-].[Na+].S(OC)(O[CH3:17])(=O)=O>CCOCC.C(Cl)(Cl)Cl>[CH3:1][O:2][C:3]1[N:8]=[C:7]([O:9][CH3:17])[CH:6]=[C:5]([OH:10])[N:4]=1

Komponenten

Versuchsvorschrift

142 g (1 mol) of 2-methoxy-4,6-dihydroxypyrimidine are added while stirring to 500 cc of sodium hydroxide solution 2N and the mixture is stirred at 50° for 1 hour. Subsequently it is cooled to room temperature and 139 g (1.1 mol) of dimethyl sulphate are added dropwise while stirring; by the addition of 2N sodium hydroxide solution the pH value is kept at between 8.0 and 8.2. The mixture is stirred at 50° for a further 2 hours, cooled to room temperature and extracted with chloroform. After drying the chloroform phase over sodium sulphate the solvent is evaporated in a vacuum. A white powder is obtained. After decomposition with ether/chloroform (1:1), the substance has a M.P. of 197°-201°.