In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 4522-35-4 as follows. category: pyrazoles-derivatives
INTERMEDIATE 14 3-(3-Iodo-lH-pyrazol-l-yl)pyridine To a solution of 3-iodopyrazole (1.00 g, 5.16 mmol) in DMSO (15.1 mL) was added sodium hydride (60% in oil, 0.247 g, 6.19 mmol), and stirred for 0.5 h before 3- fluoropyridine (0.443 mL, 5.16 mmol) was added. The reaction mixture was stirred at 90 C overnight. This was quenched by the addition of water and extracted with EtOAc. The combined organic extracts were washed with water and brine, dried over MgS04 and concentrated in vacuo. The crude mixture was purified by flash chromatography (ISCO Combiflash, 40 g, 0-50 % EtOAc in hexanes) to give 3-(3- iodo-lH-pyrazol-l-yl)pyridine, as a white solid. LCMS calc. = 271.96; found = 271.85 (M+H)+. 1H NMR (500 MHz, CDC13): delta 8.93 (d, J= 2.5 Hz, 1 H); 8.57 (dd, J= 4.7, 1.1 Hz, 1 H); 8.04 (d, J= 8.4 Hz, 1 H); 7.79 (d, J= 2.5 Hz, 1 H); 7.41 (dd, J = 8.3, 4.8 Hz, 1 H); 6.68 (d, J= 2.4 Hz, 1 H).
According to the analysis of related databases, 4522-35-4, the application of this compound in the production field has become more and more popular.