Process for preparing substituted N-phenylhydroxylamines

US8563748B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alexander Korte · Neustadt, DE
• Michael Puhl · Hirschberg, DE
• Marco Coppola · North Duke Street, DE

Key dates

• Filing date: Sep 20, 2011
• Grant date: Oct 22, 2013
• Expiry date: Sep 20, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D231/22
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of a ring-substituted N-phenylhydroxylamine by reduction of the correspondingly substituted nitrobenzene compound, wherein the reduction is carried out by reacting the substituted nitrobenzene compound with hydrazine in the presence of a ruthenium catalyst.