Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1997-02-05
1998-09-01
Burn, Brian M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
5483684, 5483687, 564155, 564164, 564168, 560110, C07C20936
Patent
active
058012842
ABSTRACT:
Process for preparing haloaromatic amines by catalytic hydrogenation of the corresponding halonitroaromatic compounds, characterized in that iron-containing Raney nickel is used as catalyst, where the haloaromatic amines prepared can be used for the synthesis of photographic couplers which are useful in photographic emulsions or elements.
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Database WPI, AN 78-56085A, Abstract of JP 53 073 528 (1978).
Chemical Abstracts, vol. 99, abstract No. 212267, abstract of DD 159 875 (1983).
H. Adkins et al, Or.Synthesis, Col. vol. II, 180 (1955).
Blank Heinz Ulrich
Brueck Dieter
Fiege Helmut
Mais Franz-Josef
Mehl Wolf
Bayer Aktiengesellschaft
Burn Brian M.
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