Method for the preparation of substituted trihydroxybenzenes

US4762953A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Guenter Prescher · Hanau, DE
• Gebhard Ritter · Ingelheim am Rhein, DE
• Holger Sauerstein · Großkrotzenburg, DE

Key dates

• Filing date: Feb 26, 1987
• Grant date: Aug 9, 1988
• Expiry date: Feb 26, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/367
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for the production of substituted 1,2,3- and 1,2,4-trihydroxybenzenes in a single process reaction step, wherein the corresponding substituted resorcinol which is a substituted 1,3-dihydroxybenzene is contacted with an aqueous hydrogen peroxide solution and through control of the water content of the initial reaction condition and control of the reaction temperature the desired products are obtained.