发明名称 |
Method of monohydroxylating phenolic compounds. |
摘要 |
The subject of the present invention is a method of monohydroxylating phenolic compounds which makes it possible to increase the amount of para isomers. The invention relates to a method for monohydroxylating a phenolic compound having a hydrogen atom in the position para to the hydroxyl group, with a view to obtaining a dihydroxylated aromatic compound, by reaction of the starting phenolic compound with hydrogen peroxide, in the presence of an effective amount of a strong acid and of a ketone compound, the said process being characterised in that the reaction is carried out in the presence of a effective amount of a polar aprotic organic solvent having a basicity such that it has a "donor number" of less than 25. |
申请公布号 |
EP0558376(A1) |
申请公布日期 |
1993.09.01 |
申请号 |
EP19930400388 |
申请日期 |
1993.02.17 |
申请人 |
RHONE-POULENC CHIMIE |
发明人 |
COSTANTINI, MICHEL;LAUCHER, DOMINIQUE |
分类号 |
B01J27/10;B01J27/12;B01J31/02;C07B61/00;C07C37/60;C07C39/08 |
主分类号 |
B01J27/10 |
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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