Bromination of hydroxyaromatic compounds and further...

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07045666

ABSTRACT:
Brominated hydroxyaromatic compounds such as p-bromophenol are prepared by contacting a hydroxyaromatic compound with oxygen and a bromine source such as hydrogen bromide or an alkali metal or alkaline earth metal bromide in an acidic medium, in the presence of elemental copper or a copper compound as catalyst. The brominated product of this reaction may be converted alternately to a dihydroxyaromatic compound such as hydroquinone by hydrolyses, or a dihydroxybiphenyl compound such as 4,4′-dihydroxybiphenyl by reductive coupling.

REFERENCES:
patent: 1934656 (1933-11-01), Britton et al.
patent: 3796732 (1974-03-01), Brenner
patent: 3933681 (1976-01-01), Hutchings et al.
patent: 3987068 (1976-10-01), Reilly
patent: 5177258 (1993-01-01), Becker et al.
patent: 6693221 (2004-02-01), Mills et al.
patent: 6815565 (2004-11-01), Mills et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bromination of hydroxyaromatic compounds and further... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bromination of hydroxyaromatic compounds and further..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bromination of hydroxyaromatic compounds and further... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3623083

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.