Invention Grant
- Patent Title: Process for preparing (4-nitro-sophenyl)phenylhydroxylamine
- Patent Title (中): 制备（4-硝基 - 苯基）苯基羟胺的方法
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Application No.: US566073Application Date: 2000-05-08
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Publication No.: US6166256APublication Date: 2000-12-26
- Inventor: Henry Giera , Carl Casser , Pieter Ooms , Michael Schelhaas , Christian Laue , Michaela Meiers , Gerhard Braun
- Applicant: Henry Giera , Carl Casser , Pieter Ooms , Michael Schelhaas , Christian Laue , Michaela Meiers , Gerhard Braun
- Applicant Address: DEX Leverkusen
- Assignee: Bayer Aktiengesellschaft
- Current Assignee: Bayer Aktiengesellschaft
- Current Assignee Address: DEX Leverkusen
- Priority: DEX19922405 19990514
- Main IPC: B01J31/02
- IPC: B01J31/02 ; C07B61/00 ; C07C239/10 ; C07C239/00
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.
Public/Granted literature
- US5862186A RF simplex spread spectrum receiver and method Public/Granted day:1999-01-19
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