Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 1005-38-5, name is 4-Amino-6-chloro-2-(methylthio)pyrimidine. A new synthetic method of this compound is introduced below., category: pyrimidines
Step A: Preparation of 7-chloro-5-(methylthio)imidazo[1.2-clpyrimidine hydrochloride: A solution of 6-chloro-2-(methylthio)pyrimidin-4-amine (25.17 g, 143.3 mmol) and 2-chloroacetaldehyde (27.73 mL, 215.0 mmol) (50 % aqueous) in 1 ,4-dioxane (50 mL) was heated at 95 C for 14 hours. The reaction mixture was allowed to cool to ambient temperature and then cooled in an ice bath. The reaction mixture was filtered and the solids washed with dioxane to afford 7-chloro-5-(methylthio)imidazo[l ,2-c]pyrimidine hydrochloride (24.01 g, 101.7 mmol, 70.96% yield) as a tan powder. MS (apci) m/z = 200.0 (M+H).
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Reference:
Patent; ARRAY BIOPHARMA INC.; BOYS, Mark Laurence; BURGESS, Laurence, E.; GRONEBERG, Robert, D.; HARVEY, Darren, M.; HUANG, Lily; KERCHER, Timothy; KRASER, Christopher, F.; LAIRD, Ellen; TARLTON, Eugene; ZHAO, Qian; WO2011/130146; (2011); A1;,
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