申请人:Mitsui Toatsu Chemicals, Inc.
公开号:US04540818A1
公开(公告)日:1985-09-10
Preparation of 3,3'- or 3,4'-diaminodiphenylmethane by catalytically reducing and dechlorinating, in the presence of a reduction catalyst, a dinitrobenzophenone compound having the formula ##STR1## wherein X is chlorine and attached to a position 4 or 6 on the benzene ring, and Y is hydrogen or chlorine with the proviso that when Y is hydrogen, the nitro group is attached to a position 3' or 4', and when Y is chlorine, Y is attached to a position 4' and the nitro group is attached to a position 3'.
在还原催化剂的存在下,通过催化还原和脱氯作用制备3,3'-或3,4'-二氨基二苯甲烷,所用化合物为二硝基苯基酮,其化学式为##STR1##其中X为氯,附着在苯环上的4或6位置,Y为氢或氯,但当Y为氢时,硝基团附着在3'或4'位置,当Y为氯时,Y附着在4'位置,硝基团附着在3'位置。