S(Cl)([Cl:3])=O.O[CH2:6][C:7]1[CH:12]=[C:11]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[N:10]=[CH:9][N:8]=1>ClCCl>[ClH:3].[Cl:3][CH2:6][C:7]1[CH:12]=[C:11]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[N:10]=[CH:9][N:8]=1A solution of 36 ml of thionyl chloride in 30 ml of dichloromethane was added dropwise, at 0° C., to a solution of 3 g of 4-hydroxymethyl-6-morpholinopyrimidine in 30 ml of dichloromethane. The reaction solution was allowed to reach room temperature and was concentrated in vacuo. Addition of diethyl ether resulted in precipitation of 3.2 g of 4-chloromethyl-6-morpholinopyrimidine hydrochloride (melting point 139° C. [decomposition]).
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