Process for the production of 4,4-isopropylidene-bis'(2,6-dibromophenol)

US4180684A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Peter Kleinschmit · Hanau, DE
• Eberhard Walter · Frankfurt am Main, DE
• Helmut Mechler · Hofheim, DE
• Gunter Theis · Hanau, DE
• Brigitte Meiners · Alzenau, DE

Key dates

• Filing date: Jan 14, 1977
• Grant date: Dec 25, 1979
• Expiry date: Jan 14, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C37/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

4,4'-isopropylidene-bis(2,6-dibromophenol) is produced by reacting 4,4'-isopropylidene diphenol with hydrogen bromide or a mixture of hydrogen bromide with up to an equimolar amount of free bromine in admixture with hydrogen peroxide and in the presence of water and an inert organic liquid.