Process for preparation of 3,3'- or 3,4'-diamino benzophenone
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsSaburo Kawashima, Akihiro Yamaguchi
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Abstract
3,3'- or 3,4'-diamino benzophenone is prepared by catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a benzophenone compound or benzophenone compounds of the general formula ##STR1## in which X is a halogen atom at position 2 or 4 of the benzene ring and Y is hydrogen or a halogen atom and in which the nitro group is at position 3' or 4' of the benzene ring if Y is hydrogen, while Y is at position 4' and the nitro group is at position 3' of the benzene ring if Y is a halogen atom.
Claims7
A process for preparing 3,3'- or 3,4'-diamino benzophenone which comprises catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a benzophenone compound or benzophenone compounds of the following general formula ##STR13## in which X is a halogen atom at position 2 or 4 of the benzene ring and Y is hydrogen or a halogen atom and in which the nitro group is at position 3' or 4' of the benzene ring if Y is hydrogen, while Y is at position 4' and the nitro group is at position 3' if Y is a halogen atom.
Dependencies are inferred from the claim text.