申请人:Sukopp Martin
公开号:US20100004307A1
公开(公告)日:2010-01-07
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 secondary and/or tertiary amines and the acid(s) are selected from hydrofluoric, hydrochloric, hydrobromic and hydroiodic acid and 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, wherein the temperature of the reaction mixture at no time exceeds 39° C.
本发明涉及一种吡唑衍生物的磺酰化过程,其特征在于在至少一个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)与磺酰化试剂S反应,其中胺(s)选择自二级和/或三级胺,酸(s)选择自氢氟酸、氢氯酸、氢溴酸、氢碘酸和磺酸衍生物,并加入卤代试剂,其中S为[CF3S(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,反应混合物的温度在任何时候均不超过39℃。