A process is described for the preparation of 3-alkylsulfinylbenzoyl derivatives of the formula (IIIa) by reaction of 3-alkylsulfinylbenzoic acids of the formula (Ib) with compounds of the formula (II) in the presence of a chlorinating agent and a base.
In the formulae specified above, Y is a radical such as pyrazolyl and cyclohexanedionyl. R1, R2 and R3 are radicals such as halogen, nitro, cyano and alkyl.
本发明提供了一种制备式(IIIa)的3-烷基磺酰基苯甲酰衍
生物的方法,该方法通过在
氯化剂和碱存在下,将式(Ib)的3-烷基磺酰基
苯甲酸与式(II)的化合物反应得到。在上述公式中,Y是诸如
吡唑基和
环己烷二酮基之类的基团。R1、R2和R3是诸如卤素、硝基、
氰基和烷基等基团。