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    • 37. 发明授权
    • Process for the preparation of 4,4′-dihalogen-o-hydroxydiphenyl compounds
    • 制备4,4'-二卤代-O-羟基二苯基化合物的方法
    • US06596907B1
    • 2003-07-22
    • US09806668
    • 2001-04-03
    • Armando Di TeodoroWerner HölzlDieter ReinehrRudolf Zink
    • Armando Di TeodoroWerner HölzlDieter ReinehrRudolf Zink
    • C07C4100
    • C07C41/16C07C41/22C07C41/26C07C43/23C07C43/29C07C43/295
    • A description is given of a three-step process for the preparation of 4,4′-dihalogen-o-hydroxydiphenyl compounds of formula (1) which comprises: a) hologenating an alkoxyphenol of formula (6) (=a1), reacting the resulting halogenated phenol compound of formula (5) with p-dihalobenzene of formula (4a) in the presence of copper and/or copper salts to the diphenyl ether compound of formula (2) (=a2) and subsequent ether fission to the diphenyl ether compound of formula (1) (=a3); or b) reacting an alkoxyphenol of formula (6) with the halophenol of formula (4b) to the compound of formula (3) (=b1), then halogenating this compound (=b2) and subsequent ether fission of the resulting compound of formula (2) to the diphenyl ether compound of formula (1) (=b3). The compounds of formula (1) are used for protecting organic materials and objects against microorganisms.
    • 给出了制备式(1)的4​​,4'-二卤代邻羟基二苯基化合物的三步法,其包括:a)使式(6)的烷氧基​​酚(= a1)氢化,使 得到式(5)的卤代酚化合物与式(4a)的对二卤苯在铜和/或铜盐存在下与式(2)(= a2)的二苯基醚化合物反应,随后醚裂解成二苯基醚 式(1)化合物(= a3); 或b)使式(6)的烷氧基​​酚与式(4b)的卤代酚反应到式(3)的化合物(= b1),然后将该化合物(= b2)卤化,随后将所得的式 (2)到式(1)的二苯醚化合物(= b3)。 式(1)化合物用于保护有机材料和物体免受微生物侵害。