Title:
3,4’ジアセトキシベンゾフェノン製造用中間体としての3,4’ジヒドロキシベンゾフェノンの製造方法
Document Type and Number:
Japanese Patent JP5480918
Kind Code:
B2
Abstract:
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.
Inventors:
Lee Kyu Seung
Vincent Michael Francis
Vincent Michael Francis
Application Number:
JP2011552093A
Publication Date:
April 23, 2014
Filing Date:
February 24, 2010
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C07C45/81; C07C45/45; C07C49/83; C07B61/00; C07C67/08; C07C67/52; C07C67/56; C07C69/16
Domestic Patent References:
| JP56047423A | ||||
| JP55048217A | ||||
| JP58015936A | ||||
| JP3123752A |
Other References:
IRWIN,3,4'-DIHYDROXYBENZOPHENONE TEREPHTHALATE: AN ALL-AROMATIC THERMOTROPIC POLYESTER WITH A HELICAL CHAIN CONFORMATION,MACROMOLECULES,1989年,V22,P1065-1074
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Gen Tashiro
Sadao Kumakura
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Gen Tashiro