Diethyl Ether → HCID 68508768, compound

Participants

Reaction Steps

To a stirred solution of 43.62 mmol of 4-chloro-5-methyl-3-trifluoromethylpyrazole-1-carboxylic acid tertbutyl ester in 20 mL of dichloromethane, carefully add 40 mL of 4M HCl/dioxane. The reaction mixture was allowed to stir for 2 hours. Add fresh ether and filter the white solid obtained. Vaccum dry to give the title compound 4-chloro-5-methyl-3-trifluoromethylpyrazole-1-carboxylic acid in 96% yield. LC-MS m/z=242 (M+).

Provenance & Evidence