| abstract |
The present invention relates to improvements in processes towards the production 3- difluoromethyl-1 -methyl- 1H-pyrazole-4-carboxylic acid, which is a useful intermediate in fungicide production. In particular, the invention relates to a process for treating a compound of formula III, wherein R 1 is C 1 -C 6 alkyl and R 2 is CF 3 , CF 2 H or CFH 2 , comprising the steps of a) contacting a compound of formula III with base, and b) separating the compound of formula III and the base. |