申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0839801A2
公开(公告)日:1998-05-06
A method for producing a compound of the formula:
wherein R is an acyl group or a silyl group, the rings A and B respectively may have one to four substituent(s), or a salt thereof, which comprists reacting a compound of the formula:
wherein R has the same meaning as defined above, the ring A may have one to four substituents at the position(s) other than 2-position, or a salt thereof, with a compound of the formula:
wherein Y is a hydroxyl group or a halogen atom, the ring B may have one to four substituent(s), or its salt, in the presence of a catalyst other than polyphosphonic acid.
The method produces aminobenzophenone derivative of the formula (I) in a high purity, a high yield, with a conventional and commercially advantageous procedure.
一种生产式化合物的方法:
其中 R 为酰基或硅烷基,环 A 和环 B 可分别具有一至四个取代基,或其盐,该方法包括使式 如下化合物反应
其中 R 的含义与上述定义相同,环 A 可在 2 位以外的位置上具有一至四个取代基,或其盐与式化合物反应:
其中 Y 为羟基或卤素原子,环 B 可有一至四个取代基,或其盐,在多膦酸以外的催化剂存在下。
该方法可生产出高纯度、高收率的式(I)氨基二苯甲酮衍生物,其生产过程既传统又具有商业优势。