These common heterocyclic compound, 1450-93-7, name is 1H-imidazol-2-amine sulfate(2:1), its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Product Details of 1450-93-7
1.1. 7-(pyrimidin-4-yl)-1 H-imidazo[1,2-a]pyrimidin-5-one A mixture containing 2.9g (15 mmol) of 3-oxo-3-(pyrimidin-4-yl)-propionic acid ethyl ester (prepared by analogy to the method described in patent DE 2705582), 2g (15 mmol) of 2-aminoimidazole hemisulfate and 1.2g (15 mmol) of ammonium acetate was heated at 140ØC during 18 h. The cooled mixture was treated with 30ml of acetonitrile and filtered and the precipitate was added to water and heated at reflux temperature for 30 min. The resulting solution was cooled and the precipitate recovered by filtration. The crude product thus obtained was recrystallised from ethanol to give 1.75g of pure product as a gray solid. Mp: 345-346ØC
The synthetic route of 1H-imidazol-2-amine sulfate(2:1) has been constantly updated, and we look forward to future research findings.
Reference:
Patent; SANOFI-SYNTHELABO; MITSUBISHI PHARMA CORPORATION; EP1340759; (2003); A1;,
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