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 52222-73-8 as follows. name: 4-(Trifluoromethyl)-1H-pyrazole
Intermediate (1): (4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenyl)methanol A mixture of (4-iodophenyl)methanol (1030 mg, 4.41 mmol), 4-(trifluoromethyl)-1H-pyrazole (600 mg, 4.41 mmol), copper (I) iodide (168 mg, 0.882 mmol), trans-4-hydroxy-L-proline (231 mg, 1.76 mmol) and cesium carbonate (2900 mg, 8.82 mmol) in dimethylsulfoxide (7.5 mL) was heated to 85 C. for 20 hours. The mixture was diluted with water and extracted with ethyl acetate twice. The combined organic layers were dried over sodium sulfate, filtered and concentrated. Purification by column chromatography (0-45% ethyl acetate in heptane), gave (4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenyl)methanol. 1H NMR (400 MHz, CDCl3, delta): 8.16 (s, 1H), 7.89 (s, 1H), 7.65 (d, J=8.39 Hz, 2H), 7.47 (d, J=8.39 Hz, 2H), 4.74 (d, J=5.66 Hz, 2H), 1.85 (t, J=5.86 Hz, 1H).
According to the analysis of related databases, 52222-73-8, the application of this compound in the production field has become more and more popular.
Reference:
Patent; PFIZER INC.; US2012/202834; (2012); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics