申请人:Bromine Compounds Ltd.
公开号:EP0477853A1
公开(公告)日:1992-04-01
In a process for the preparation of 3,4'-diaminodiphenyl ether, 3-nitrodiphenyl ether is reacted with a compound selected from Br2 and HN03 to yield a compound of the formula:
wherein
R is Br or N02; and then carrying out, in any appropriate order, the steps of: (a) substituting any Br atom in the 4'-position with an NH2 group; (b) reducing any N02 group to an NH2 group.
在制备3,4'-二氨基二苯醚的过程中,将3-硝基二苯醚与Br2和HN03中选择的化合物反应,得到下式化合物:其中R为Br或N02; 然后按任何适当的顺序进行以下步骤:(a)用NH2基替换4'-位的任何Br原子;(b)将任何N02基还原为NH2基。