There is described a process for the preparation of halogenated hydroxydiphenyl compounds of formula (1) by acylation of a halogenated benzene compound (first stage), etherification of the acylated compound with a halogenated phenol compound, which is not further substituted in the ortho-position (second stage), oxidation of the etherified compound (third stage) and hydrolysis of the oxidized compound in a fourth stage, wherein the reaction of the second stage is carried out in the presence of K
2
CO
3
and any desired copper catalyst, where K
2
CO
3
is used in a concentration of from 0.5 to 30 mol, based on the phenol compound employed of formula (6), according to the reaction scheme (I) in which R
1
and R
2
independently of one another are F, Cl or Br; R
3
and R
4
independently of one another are hydrogen; or C
1
-C
4
alkyl; m is 1 to 3; and n is 1 or 2. The compounds of formula (1) are used for protecting organic materials and articles from microorganisms.
1
描述了一种制备卤代羟基二苯基化合物的过程,通过对卤代苯化合物进行酰化(第一阶段),将酰化化合物与一种未在邻位进一步取代的卤代
酚化合物进行醚化(第二阶段),氧化醚化化合物(第三阶段)和对氧化化合物进行
水解(第四阶段)。其中,第二阶段的反应在K2CO3和任意所需的
铜催化剂存在下进行,其中K2CO3的浓度为根据所用的化合物的摩尔数为0.5至30摩尔,根据反应方案(I)中的R1和R2分别为F、Cl或Br;R3和R4分别为氢或C1-C4烷基;m为1至3;n为1或2。式(1)的化合物用于保护有机材料和物品免受微
生物的侵害。