Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 20154-03-4, name is 3-(Trifluoromethyl)-1H-pyrazole, A new synthetic method of this compound is introduced below., Computed Properties of C4H3F3N2
Step A: Preparation of 2-chloro-4-[3-(trifluoromethyl)-lH-pyrazol-l-yl]benzaldehyde A mixture of 2-chloro-4-fluorobenzaldehyde (7.0 g, 44.3 mmol), 3-(trifluoromethyl)- lH-pyrazole (9.03 g, 66.45 mmol) and potassium carbonate (12.2 g, 88.6 mmol) in anhydrous N,N-dimethylformamide (70 mL) was stirred for 2 h at 110 °C. The reaction mixture was cooled to 0 °C, poured into ice water (800 mL) and stirred for 15 min. The precipitate formed was filtered and dried under reduced pressure to afford the title compound (10.2 g), which was used without further purification. H NMR delta 10.4 (s, 1H), 8.00 (m, 2H), 7.85 (d, 1H), 7.77 (m, 1H), 6.70 (d, 1H).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; E. I. DU PONT DE NEMOURS AND COMPANY; BEREZNAK, James, Francis; TAGGI, Andrew, Edmund; MARCUS, Kimberly, Katherine; REDDY, Ravisekhara, P.; WO2014/172191; (2014); A1;,
Pyrazole – Wikipedia,
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