发明名称 |
PROCESS FOR THE PREPARATION OF 4,4' - DIHALOGEN - O - HYDROXYDIPHENYL COMPOUNDS |
摘要 |
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. |
申请公布号 |
IL141946(A) |
申请公布日期 |
2006.10.05 |
申请号 |
IL20010141946 |
申请日期 |
2001.03.12 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
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分类号 |
A61P31/02;A01N31/16;A61K31/085;C07B61/00;C07C41/16;C07C41/22;C07C41/26;C07C43/295;C11D3/24;C11D3/48;C11D9/28;C11D9/50 |
主分类号 |
A61P31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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