The present invention relates to a process for the sulfinylation of a pyrazole derivative, characterized in that 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-1H-pyrazole-3-carbonitrile (II) is reacted with a sulfinylating agent S in the presence of at least one amine acid complex wherein the amine(s) are selected from cyclic secondary amines and the acid(s) are selected from sulfonic acid derivatives, and with the addition of a halogenating agent, wherein S is [CF
3
S(O)]
2
O; or CF
3
S(O)X wherein X means fluoro, chloro, bromo, iodo, a hydroxy group, or an alkaline or alkaline earth metal salt of the hydroxy group; or mixtures thereof.
本发明涉及一种噻磺酰化
吡唑衍
生物的方法,其特征在于在至少一种胺酸复合物的存在下,将5-
氨基-1-[2,6-二
氯-4-(三
氟甲基)苯基]-1H-
吡唑-3-羧腈(II)与噻磺酰化试剂S反应,并加入卤代试剂,其中S为[ (O)]2O;或
CF3S(O)X,其中X表示
氟、
氯、
溴、
碘、羟基或羟基的碱
金属或碱土
金属盐;或其混合物。