Adding a certain compound to certain chemical reactions, such as: 35277-02-2, name is 4-Fluoro-1H-pyrazole, belongs to pyrazoles-derivatives compound, 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 35277-02-2, Formula: C3H3FN2
To a solution of 4-fluoro-pyrazole (0.10 g, 0.001162 mol) in anhydrous THF (10 mL) , which was cooled in an ice water bath under an argon atmosphere, was added sodium hydride (60% dispersion in oil, 0.16 g, 0.0040665 mol). After addition, the resulting mixture was stirred for three hours. (S)-3-Bromo-N-(4-cyano-3-(trifluoromethyl)phenyl)-2-hydroxy-2-methylpropanamide (0.41 g, 0.001162 mol) was added to above solution, and the resulting reaction mixture was allowed to stir overnight at room temperature under argon. The reaction was quenched by water, extracted with ethyl acetate. The organic layer was washed with brine, dried with MgSO4, filtered, and concentrated under vacuum.The product was purified by a silica gel column using hexanes and ethyl acetate (2:1 to 1:1) as eluent to afford 0.27 g (64%) of the titled compound as yellowish solid.1H NMR (400 MHz, DMSO-d6) d 10.38 (s, 1H, NH), 8.47 (d, J = 1.6-2.0 Hz, 1H, ArH), 8.24 (dd, J = 8.4 Hz, J = 2.0 Hz, 1H, ArH), 8.10 (d, J = 8.4 Hz, 1H, ArH), 7.74 (d, J = 4.4 Hz, 1H, Pyrazole- H), 7.41 (d, J = 4.4 Hz, 1H, Pyrazole-H), 6.31 (s, 1H, OH), 4.39 (d, J = 14.0 Hz, 1H, CH), 4.21 (d, J = 14.4 Hz, 1H, CH), 1.34 (s, 3H, CH3).Mass (ESI, Positive): 357.11 [M+Na]+.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 4-Fluoro-1H-pyrazole, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; GTX, INC.; UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION; NARAYANAN, Ramesh; MILLER, Duane, D.; PONNUSAMY, Thamarai; HWANG, Dong-Jin; HE, Yali; (202 pag.)WO2019/222556; (2019); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics