4,4′-ジハロゲン-o-ヒドロキシジフェニル化合物の製造方法

Japanese Patent JP4634609

B2

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.

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Di Theodoro, Armando
Herzl, Werner
Liner, dieter
Zink, Rudolf

JP2000574486A

February 16, 2011

September 27, 1999

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Ciba Holding Inc.

A61P31/02; A01N31/16; C07C41/26; A61K31/085; C07B61/00; C07C41/16; C07C41/22; C07C43/295; C11D3/24; C11D3/48; C11D9/28; C11D9/50

JP42014936B1
JP3024030A
JP49070937A
JP63238025A

Hajime Tsukuni
Fusayuki Saito
Hidemi Kawada

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