Synthetic Route of 176969-34-9, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 176969-34-9, name is 3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid, This compound has unique chemical properties. The synthetic route is as follows.
3-(Difluoromethyl)-1-methyl-pyrazole-4-carboxylic acid (75 mg, 0.43 mmol) and (S)- 6-(4-(1,1,1-trifluoropropan-2-yl)-4H-1,2,4-triazol-3-yl)pyridin-2-amine (110 mg, 0.43 mmol) were dissolved in Et3N (0.60 mL, 4.3 mmol). Propylphosphonic anhydride ( 50 wt% in EtOAc, 0.44 mL) was then added and the reaction was heated at 80 C for 3 h. After this time, he reaction was cooled to rt and quenched by addition of MeOH (2 mL). The resulting solid was filtered and dried under vacuum to give the title compound (150 mg, 85%) as a white solid. 1H NMR (400 MHz, MeOD) d ppm 9.01 (s, 1H), 8.30 – 8.38 (m, 1H), 8.18 – 8.26 (m, 1H), 7.92 – 8.05 (m, 2H), 7.05 – 7.41 (m, 2H), 4.02 (s, 3H), 1.85 – 1.94 (m, 3H). MS (ESI): 416.0 [M + H]+.
The chemical industry reduces the impact on the environment during synthesis 3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid. I believe this compound will play a more active role in future production and life.