Process for preparing 4-aminodiphenylamine intermediates
AssigneeFlexsys America L.P.
InventorsRalph Dale Triplett II, Roger Keranen Rains
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Abstract
The invention is directed to a method of producing one or more 4-aminodiphenylamine intermediates comprising the steps: a. bringing an aniline or aniline derivative and nitrobenzene into reactive contact; and b. reacting the aniline and nitrobenzene in a confined zone at a suitable time and temperature, in the presence of a mixture comprising a strong organic base, or equivalent thereof, and an oxidant comprising hydrogen peroxide in an amount of from about 0.01 to about 0.60 moles of hydrogen peroxide to moles of nitrobenzene.
Claims25
A method of producing one or more 4-aminodiphenylamine intermediates comprising the steps of:
- a. bringing an aniline or aniline derivative and nitrobenzene into reactive contact;
- and
- b. reacting the aniline and nitrobenzene in a confined zone at a suitable time and temperature, in the presence of a mixture comprising a strong organic base, or equivalent thereof, and an oxidant comprising hydrogen peroxide in an amount of from about 0.01 to about 0.60 moles of hydrogen peroxide to moles of nitrobenzene.
Dependencies are inferred from the claim text.