Patent
Hydrogenation of halonitrobenzenes without dehalogenation (US Patent 5068436)
E. I. du Pont de Nemours and Company · Granted Nov 26, 1991 · Filed Mar 10, 1989
Patent number: 5068436 Granted: 1991-11-26 Filed: 1989-03-10 Inventors: Donald D. May (Chadds Ford, PA, US) Assignees: E. I. du Pont de Nemours and Company (Wilmington, DE, US)
Abstract
A method for inhibiting dehalogenation of fluorinated and chlorinated benzenoid nitro compounds during catalytic hydrogenation to make the corresponding substituted anilines by conducting the hydrogenation reaction in the presence of an acidic catalytic medium.
Claims
- In a process for the catalyzed hydrogenation of
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