Process for the preparation of 4-substituted 3-methyl-1-aryl-5-amino-pyrazoles

摘要

A process for the preparation of a 4-substituted 3-methyl-1-aryl-5-amino-pyrazole of the formula <IMAGE> in which X1, X2 and X3 independently of one another each stand for halogen and Ar stands for optionally substituted phenyl.