发明名称 |
A METHOD FOR THE PREPARATION OF 4-HYDROXYBENZOPHENONES |
摘要 |
Preparation of para-substituted 4-hydroxybenzophenones by forming poly(4-oxybenzoyl) in situ and reacting it with an appropriately substituted aromatic compound. The poly(4-oxybenzoyl) can be formed from a precursor such as 4-hydroxybenzoic acid by reaction with an agent which removes water from the acid to form the polymer. The reaction with the appropriately substituted aromatic compound, for example fluorobenzone, is effected in the presence of a Lewis acid compound such as aluminum chloride. |
申请公布号 |
ZA8404284(B) |
申请公布日期 |
1985.04.24 |
申请号 |
ZA19840004284 |
申请日期 |
1984.06.06 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC. |
发明人 |
HOWARD MATTHEW COLQUHOUN |
分类号 |
B01J27/00;C07B61/00;C07C45/00;C07C45/46;C07C45/81;C07C49/83;C07C49/84;C07C67/00;C08G63/06;C08G63/682 |
主分类号 |
B01J27/00 |
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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