A process for the preparation of a compound of the formula (I) in which Q, Y, Z, R
1
, R
2
are as defined in claim
1;
in which a) a compound of the formula (II), in which X is a leaving group, is reacted with a halogenating agent to give a compound of the formula (III), in which W is a halogen atom; and b) the resulting compound of the formula (III) is reacted with a compound of the formula (IV), in which R
1
, R
2
, Y, Z and Q are as defined in claim
1;
wherein the preparation of the compound of the formula (III) according to process stage a) involves a purification step in which the reaction mass which has formed is treated with water in the acidic pH range; a process for the preparation of a compound of the formula (III) according to the abovementioned process a), and the use of the compounds of the formulae (II), (III) and (IV) in a process as detailed above are described.
一种制备式(I)化合物的方法,其中Q、Y、Z、R1、R2如权利要求1所定义;其中a)式(II)化合物与卤化试剂反应,得到式(III)化合物,其中W为卤素原子;b)所得的式(III)化合物与式(IV)化合物反应,其中R1、R2、Y、Z和Q如权利要求1所定义;其中,根据步骤a)制备式(III)化合物的方法涉及一种纯化步骤,在该步骤中形成的反应物质在酸性pH范围内用
水处理;描述了根据上述方法a)制备式(III)化合物的方法,以及式(II)、(III)和(IV)化合物在上述过程中的使用。