申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0212823A1
公开(公告)日:1987-03-04
A crude 3,3'-dinitrodiphenyl compound selected from 3,3'-dinitrodiphenylsulfone or 3,3'-dinitrobenzophenone is purified by reacting the crude 3,3'-dinitrodiphenyl compound with a lower alcohol in the presence of a base so as to convert pracitcally the isomer or isomers, which contain one or more nitro groups at the ortho- or/and para-positions, only into the corresponding alkoxy compound or compounds thereof and then separating the alkoxy compound or compounds.
选自 3,3'-二硝基二苯砜或 3,3'-二硝基二苯甲酮的粗制 3,3'-二硝基二苯化合物的提纯方法是:在碱存在下,将粗制 3,3'-二硝基二苯化合物与低级醇反应,以便将正位或/和对位含有一个或多个硝基的异构体转化为相应的烷氧基化合物,然后分离烷氧基化合物。