PROCESS FOR THE PREPARATION OF PYRAZOLES

摘要

1. A process for preparing a pyrazole of the general formula see diagramm : EP0237762,P5,F1 where R**1, R**2 and R**3 are each hydrogen, alkyl, cycloalkyl or aryl, which comprises electrochemically oxidizing a 2-pyrazoline of the general formula see diagramm : EP0237762,P5,F2 where R**1, R**2 and R**3 have the abovementioned meanings, in the presence of an ionic halide.