发明名称 |
PROCESS FOR PRODUCING 3,4' DIHYDROXYBENZOPHENONE |
摘要 |
A process for synthesizing 3,4′dihydroxybenzophenone by reacting meta-hydroxybenzoic acid and phenol in the presence of a Lewis acid, and a protonic acid. Upon completion of the reaction the Lewis and protonic acids are removed and then the reaction product of 3,4′dihydroxybenzophenone is contacted with water (at temperature not greater than 10° C.) and ammonium hydroxide followed by filtration.
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申请公布号 |
US2010217047(A1) |
申请公布日期 |
2010.08.26 |
申请号 |
US20090393310 |
申请日期 |
2009.02.26 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LEE KIU-SEUNG;VINCENT MICHAEL FRANCIS |
分类号 |
C07C45/41 |
主分类号 |
C07C45/41 |
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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