[EN] PROCESS FOR THE PREPARATION OF PYRAZOLE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PYRAZOLE
申请人:BASF SE
公开号:WO2010105969A1
公开(公告)日:2010-09-23
The present invention refers to a process for the preparation of pyrazole derivatives of formula (I), wherein W is nitrogen or CR1, R1, R2, R4 and R5 are each independently selected from hydrogen, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, R7S(O)n, nitro, cyano, and pentafluorothio; R3 is hydrogen, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, R7S(O)n, nitro, cyano, pentafluorothio or phenyl which is unsubstituted or substituted by 1 to 5 members of the group consisting of halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, R7S(O)n, nitro, cyano, and pentafluorothio which are the same or different; R7 is C1-C6-alkyl or C1-C6-haloalkyl; and n is 0, 1, or 2; characterized in that hydrazines of formula (II) wherein W, R2, R3, R4, and R5 are as defined for pyrazole derivatives of formula (I), are reacted with a compound of formula (III).
本发明涉及一种制备式(I)的吡唑衍生物的方法,其中W是氮或CR1,R1、R2、R4和R5各自独立地选自氢、卤素、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基、R7S(O)n、硝基、氰基和五氟硫代基;R3是氢、卤素、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基、R7S(O)n、硝基、氰基、五氟硫代基或苯基,该苯基未取代或被1至5个卤素、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基、R7S(O)n、硝基、氰基和五氟硫代基所取代,这些基团是相同的或不同的;R7是C1-C6烷基或C1-C6卤代烷基;n为0、1或2;其特征在于将式(II)的肼与式(III)的化合物反应,其中W、R2、R3、R4和R5如同式(I)所定义的吡唑衍生物。