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. 35100-92-6, name is 1,5-Dimethyl-1H-pyrazol-3-amine, A new synthetic method of this compound is introduced below., Recommanded Product: 1,5-Dimethyl-1H-pyrazol-3-amine
To a solution of 3-amino-1,5-dimethylpyrazole (0.50 g) and triethylamine (0.63 ml) in chloroform (5 ml), 2-fluoro-3-(trifluoromethyl)benzoyl chloride (0.65 ml) was added under ice cooling. The reaction solution was stirred at room temperature for 0.5 hours, washed with an aqueous 2M sodium hydroxide solution, dried over anhydrous sodium sulfate and filtrated. Thereafter, the filtrate was concentrated under vacuum. The residue obtained was washed with n-hexane to obtain a colorless solid substance of N-(1,5-dimethylpyrazol-3-yl)-2-fluoro-3-(trifluoromethyl)benzamide (1.25 g). 1H-NMR(200 MHz, CHLOROFORM-D) d ppm; 2.30 (s, 39H), 3.72 (s, 3H), 6.59 (s, 1H), 7.40 (t, J =7.5 Hz, 1H), 7.78 (t, J = 7.5 Hz, 1H), 8.34 (td, J = 7.5 Hz, 1H), 8.60-8.89. (br. s, 1H) MS (ESI)(Positive)m/z; 302 (M+H)+
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.