This invention relates to organic chemistry, in particular to processes for the preparation of pyrazoline carboxamidine derivatives of formula (I), known as potent 5-HT6 antagonists. The invention also relates to novel intermediates of these compounds.wherein the symbols have the meanings given in the description.本發明涉及有機化學,尤其是製備已知為強效5-HT6拮抗劑的式(I)的吡唑啉羧酸脒的方法。本發明還涉及這些化合物的新中間體。其中,所述符號具有說明書中給出的含義。