[O:1]1[CH2:6][CH2:5][N:4]([C:7]2[N:12]=[C:11](Cl)[CH:10]=[C:9]([Cl:14])[N:8]=2)[CH2:3][CH2:2]1.[C:15]([O:19][CH2:20][CH3:21])(=[O:18])[CH2:16][OH:17].[H-].[Na+]>O1CCCC1>[CH2:20]([O:19][C:15](=[O:18])[CH2:16][O:17][C:11]1[CH:10]=[C:9]([Cl:14])[N:8]=[C:7]([N:4]2[CH2:3][CH2:2][O:1][CH2:6][CH2:5]2)[N:12]=1)[CH3:21]2-Morpholino-4,6-dichloropyrimidine (2.34 g; 10 mmol) and ethyl glycolate (1.3 g; 12 mmol) were dissolved in tetrahydrofuran (100 mL), and chilled in an ice bath. To the solution was added sodium hydride (300 mg; 12 mmol), and it was stirred overnight at ambient temperature. The solvents were evaporated, and the solid was dissolved in ethyl acetate (200 mL) which was then washed with water (2×100 mL). The organic layer was dried over magnesium sulfate, and evaporated to give (6-chloro-2-morpholin-4-yl-pyrimidin-4-yloxy)-acetic acid ethyl ester (3.16 g).
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