Application of 113100-53-1, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 113100-53-1, name is 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
General procedure: carboxylic acid material (1.41 mmol) was dissolved in anhydrous dichloromethane (20 mL). Anhydrous DMF (2 drops)was added to the solution, followed by the dropwise addition of oxalyl chloride (536 mg, 4.22 mmol). The mixture was stirred overnight , and the solvent was removed in vacuo. The crude product acyl chloride (R1Cl) was used in the next step without further purification. R1Cl (1.33 g, 11.00 mmol) in dichloromethane was added dropwise to a stirred solution of intermediate 2 (10.00 mmol) and Et3N (0.87 g, 11.00 mmol) in dichloromethane (20 mL) at 0 oC. Stirring at room temperature was continued until TLC monitoring indicated total consumption of the intermediate 2. The reaction mixture was then evaporated to dryness, and the residue was purified by flash column chromatography on silica gel with ethyl acetate-petroleum ether (1:1) as eluent to yield the final products 3c-i.
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, 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid, other downstream synthetic routes, hurry up and to see.