[H-].[Na+].[OH:3][CH2:4][CH2:5][N:6]1[CH2:10][CH2:9][CH2:8][CH2:7]1.[Br:11][C:12]1[CH:13]=[N:14][C:15](Cl)=[N:16][CH:17]=1.O>C1COCC1>[Br:11][C:12]1[CH:13]=[N:14][C:15]([O:3][CH2:4][CH2:5][N:6]2[CH2:10][CH2:9][CH2:8][CH2:7]2)=[N:16][CH:17]=150 mg (1.15 mmol, 60%) NaH are added to a solution of 0.17 mL (1.38 mmol) N-(2-hydroxyethyl)pyrrolidine in 10 mL THF at RT. The reaction solution is stirred for 15 min at RT and then 200 mg (1.03 mmol) 5-bromo-2-chloropyrimidine are added. The solution is stirred for 16 h at RT. 10 mL water are added and the aqueous phase is extracted with 20 mL EtOAc. The organic phase is dried over Na2SO4 and the solvent is eliminated i.vac. Further purification is carried out by column chromatography on silica gel (DCM/MeOH/NH3 9:1:0.1).
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