Triethylamine → 4-Chloro-6-(4-methylpiperazin-1-yl)pyrimidin-2-amine

Participants

Reaction Conditions

Reaction Steps

2-Amino-4,6-dichloropyrimidine (15 g, 91 mmol) was treated with 1-methylpiperazine (10.1 g, 100 mmol), treated with Et3N (90 mL, 0.64 mol), treated with EtOH (185 mL), heated to 80° C. over night, cooled, concentrated and partitioned between CH2Cl2 (100 mL) and 1 M NaOH (125 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2 (4×100 mL). The combined CH2Cl2 layers were dried (MgSO4), filtered, concentrated and crystallized from EtOAc to provide 14.9 g (71%) of the title compound. 1H NMR (CDCl3) δ 2.34 (s, 3H), 2.45 (m, 4H), 3.60 (m, 4H), 4.82 (s, 2H), 5.96 (s, 1H); MS (DCl—NH3) m/z 228 (M+H)+

Provenance & Evidence