Adding a certain compound to certain chemical reactions, such as: 1034667-22-5, 5-Fluoro-1H-pyrazolo[3,4-b]pyridin-3-amine, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Recommanded Product: 5-Fluoro-1H-pyrazolo[3,4-b]pyridin-3-amine, blongs to pyridine-derivatives compound. Recommanded Product: 5-Fluoro-1H-pyrazolo[3,4-b]pyridin-3-amine
Example 6A 5-Fluoro-3-iodo-1H-pyrazolo[3,4-b]pyridine 10 g (65.75 mmol) of 5-fluoro-1H-pyrazolo[3,4-b]pyridine-3-amine were initially charged in THF (329 ml), and the mixture was cooled to 0 C. 16.65 ml (131.46 mmol) of boron trifluoride/diethyl ether complex were then added slowly. The reaction mixture was cooled further to -10 C. A solution of 10.01 g (85.45 mmol) of isopentyl nitrite in THF (24.39 ml) was then added slowly, and the mixture was stirred for a further 30 min. The mixture was diluted with cold diethyl ether (329 ml) and the resulting solid was filtered off. The diazonium salt thus prepared was added a little at a time to a solution at 0 C. of 12.81 g (85.45 mmol) of sodium iodide in acetone (329 ml), and the mixture was stirred at RT for 30 min. The reaction mixture was poured onto ice-water (1.8 l) and extracted twice with ethyl acetate (487 ml each time). The collected organic phases were washed with saturated aqueous sodium chloride solution (244 ml), dried, filtered and concentrated. This gave 12.1 g (86% purity, 60% of theory) of the title compound as a solid. LC-MS (Method 2): Rt=1.68 min MS (ESIpos): m/z=264 (M+H)+
The synthetic route of 1034667-22-5 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BAYER INTELLECTUAL PROPERTY GMBH; Follmann, Markus; Itasch, Johannes-Peter; Redlich, Gorden; Griebenow, Nils; Wunder, Frank; Li, Volkhart Min-Jian; Lang, Dieter; US2014/100229; (2014); A1;,
Pyridine – Wikipedia,
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