1-(2-Hydroxyethyl)piperazine → Methyl Hydroxyethyl Piperazinyl Methyl Pyrimidinylamino Thiazolecarboxylate

Participants

Reaction Steps

1-(2-hydroxyethyl)piperazine (Compound 3) (65 g, 0.5 mol), methyl 2-(6-bromo-2-methylpyrimidin-4-ylamino)thiazole-5-formate (Compound 11) (32.9 g, 0.1 mol), n-butanol (280 mL) and DIPEA (28.3 g, 0.2 mol) were mixed in reaction flask and reacted by refluxing for 8 h. Cooled down to room temperature and crystals precipitated overnight. After air pump filtration the cake was rinsed by n-butanol and dried to give target Compound 6 (31.7 g, yield: 83.8%).

Provenance & Evidence