Application of 1193-24-4 ,Some common heterocyclic compound, 1193-24-4, molecular formula is C4H4N2O2, 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.
To cooled (0 C.) phosphorus oxychloride (20.0 mL, 215 mmol, 4.8 equiv.) was added DMF (6.4 mL, 83 mmol, 1.9 equiv) dropwise over 3 min. The reaction mixture was stirred for fifteen min and the ice bath was removed. 4,6-Dihydroxypyrimidine (5.0 g, 44.6 mmol, 1.0 equiv.) was added and the reaction mixture was heated to 130 C. and stirred for 3.5 hr. The mixture was cooled to RT and concentrated. Ice was slowly added to the dark brown residue, followed by 600 mL of ice water. The aqueous mixture was extracted with diethyl ether (5¡Á100 mL), and the organic extracts were washed with aqueous saturated NaHCO3 (2¡Á100 mL) and brine (100 mL), and dried over anhydrous sodium sulfate and concentrated in vacuo to provide Compound 15 (4.42 g, 57%) as a crude orange solid, which was used without further purification.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1193-24-4, its application will become more common.
Reference:
Patent; Sunesis Pharmaceuticals, Inc.; US2009/36419; (2009); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia