Patent Number: 6,166,256

Title: Process for preparing (4-nitro-sophenyl)phenylhydroxylamine

Abstract: The present invention provides a process for preparing (4-nitroso-phenyl)phenyl-hydroxylamine which is characterized in that nitrobenzene is reacted in the presence of hydroxide and/or oxide-containing bases, optionally in the presence of solvents, at temperatures of 20 to 180.degree. C. and pressures of 0.1 to 10 bar. The process according to the invention has the particular advantage that it uses inexpensive and cost-effective nitrobenzene as starting material instead of the nitrosobenzene conventionally used hitherto.

Inventors: Giera; Henry (Grosskitzighofen, DE), Casser; Carl (Berlin, DE), Ooms; Pieter (Krefeld, DE), Schelhaas; Michael (Koln, DE), Laue; Christian (Monheim, DE), Meiers; Michaela (Koln, DE), Braun; Gerhard (Koln, DE)

Assignee: Bayer Aktiengesellschaft

International Classification: C07C 239/10 (20060101); C07C 239/00 (20060101); C07C 239/00 ()

Expiration Date: 12/26/2017