Process for preparation of (4-nitrosophenyl) phenylhydroxylamine

Application Number: 00108537
Application Date: 2000.05.12
Publication Number: 1274715
Publication Date: 2000.11.29
Priority Information: 1999/5/14 DE 19922405.6
International: C07C239/10
Applicant(s) Name: Bayer AG
Inventor(s) Name: H. Giera;C. Kasel;P. Ohms
Patent Agency Code: 72001
Patent Agent: pang lizhi
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 DEG 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.