申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0352956A1
公开(公告)日:1990-01-31
The present invention relates to a process for the production of halobenzophenone derivatives represented by the following formula (II):
wherein X and Y are the same or different and are independently F, Cl, Br or I, m stands for an integer of from 1 to 4 and n stands for an integer of from 0 to 4. The process comprises oxidizing a compound with an aqueous nitric acid solution having a specific gravity of from 1.32 to 1.47 at 20°C, said compound being represented by the following formula (I):
wherein X, Y, m and n have the same meanings as defined above and Z is Cl or H.
本发明涉及一种生产下式(II)所代表的卤代二苯甲酮衍生物的工艺:
其中 X 和 Y 相同或不同,且独立地为 F、Cl、Br 或 I,m 代表 1 至 4 的整数,n 代表 0 至 4 的整数。该工艺包括在 20°C 下用比重为 1.32 至 1.47 的硝酸水溶液氧化一种化合物,所述化合物由下式 (I) 表示:
其中 X、Y、m 和 n 的含义与上述定义相同,Z 为 Cl 或 H。