发明名称 |
Process for monohydroxylation of phenolic compounds |
摘要 |
The present invention relates to a process for monohydroxylation of phenolic compounds which allows an increase in the amount of para isomer. The invention relates to a process for monohydroxylation of a phenolic compound having a hydrogen atom in the para position to the hydroxyl group, for the purpose of obtaining a dihydroxylated aromatic compound by reacting the initial phenolic compound with hydrogen peroxide in the presence of an effective amount of a strong acid and of a ketonic compound, said process being characterized by the fact that the reaction is carried out in the presence of an effective amount of a polar aprotic organic solvent with a basicity such that it has a "donor number" below 25.
|
申请公布号 |
US5331103(A) |
申请公布日期 |
1994.07.19 |
申请号 |
US19930022896 |
申请日期 |
1993.02.26 |
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;(IPC1-7):C07C37/60 |
主分类号 |
B01J27/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|