How is 1-(2,2,2-Trifluoroethyl)-1H-pyrazole-5-carboxylic acid (CAS: 1006340-71-1) typically synthesized?

1-(2,2,2-Trifluoroethyl)-1H-pyrazole-5-carboxylic acid can be synthesized through the condensation of trifluoroethylamine and 1H-pyrazole-5-carboxylic acid anhydride. This reaction is typically carried out in the presence of a catalytic amount of a Lewis acid such as aluminum trichloride to enhance the reactivity and yield. The process is exothermic and requires careful temperature control.