Synthetic Route of 64951-08-2, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.64951-08-2, name is Imidazo[1,2-a]pyridine-2-carboxylic acid, molecular formula is C8H6N2O2, molecular weight is 162.15, as common compound, the synthetic route is as follows.
To a solution of imidazo[l,2-a]pyridine-2-carboxylic acid, (0.162 g, 1.0 mmol) in acetonitrile (10 mL) was added O-(7-azabenzotriazol-l-yl)-N,N,N’,N’- tetramethyluronium hexafiuoropfiosphate (HATU) (0. 38 g, 1.0 mmol) and the mixture was stirred at room temperature for 15 minutes. Triethylamine (0.46 mL, 3.0 mmol) and 4-(4-(2-(tert- butyl)-6-methylpyrimidin-4-yl)piperazin-l-yl)butan-l -amine (0.305 g, 1.0 mmol) were then added and the mixture was stirred at room temperature overnight. The mixture was then concentrated under reduced pressure, the residue obtained was dissolved in chloroform and washed with saturated aqueous sodium bicarbonate. The organic layer was separated, dried over anhydrous sodium sulfate, filtered and the solvent was removed under reduced pressure. The crude product thus obtained was purified by chromatography over a column of silica using CHCl3-MeOH (96:4) as the eluent to obtain 0.089 g (20%) of the desired product as colorless oil. TLC Rf 0.17 (CHCl3-MeOH, 95:5); 1H NMR (DMSO-d6) delta 1.25 (s, 9H), 1.44-1.60 (m, 4H), 2.23 (s, 3H), 2.23-2.46 (m, 6H), 3.24-3.44 (m, 2H), 3.58 (bs, 4H), 6.47 (s, 1H), 6.97 (td, 1H), 7.37 (td, 1H), 7.56 (dd, J= 9.4, 9.0 Hz, 1H), 8.34 (s, 1H), 8.37 (t, 1H), 8.56 (dt, 1H). ESI MS m/z 450 (MH)+. Anal. (C25H35N7O H20) Calcd: C, 64.21; H, 7.98; N, 20.97. Found: C, 64.53; H, 7.64; N, 20.94.
Statistics shows that 64951-08-2 is playing an increasingly important role. we look forward to future research findings about Imidazo[1,2-a]pyridine-2-carboxylic acid.
Reference:
Patent; SOUTHERN RESEARCH INSTITUTE; ANANTHAN, Subramaniam; WO2014/59265; (2014); A1;,
Pyridine – Wikipedia,
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