Cl[C:2]1[C:7]([CH2:8][C:9]([O:11][CH3:12])=[O:10])=[C:6]([Cl:13])[N:5]=[C:4]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=2)[N:3]=1.[CH:24]([N:27](CC)[CH:28](C)C)(C)C.Cl.CNC>CN(C=O)C>[Cl:13][C:6]1[C:7]([CH2:8][C:9]([O:11][CH3:12])=[O:10])=[C:2]([N:27]([CH3:28])[CH3:24])[N:3]=[C:4]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=2)[N:5]=1To a solution of methyl [4,6-dichloro-2-(4-nitrobenzyl)pyrimidin-5-yl]acetate (0.5 g, 1.40 mmol) in anhydrous DMF (5 mL) at room temperature under Ar atmosphere was added N,N-diiso-propylethylamine (0.0.54 mL, 3.09 mmol) and dimethylamine hydrochloride (0.126 g, 1.54 mmol). The resulting solution was stirred at 85° C. for 16 hours at which time the reaction mixture was concentrated to dryness and the residue chromatographed over silica gel eluting with 50% EtOAc in n-hexane to give methyl [4-chloro-6-(dimethylamino)-2-(4-nitrobenzyl)pyrimidin-5-yl]acetate (0.505 g, 99% yield) as a brown oil.
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