Process for the preparation of 4-phenoxy-phenols

US4355186A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Werner Becker · Hirschhorn, DE
• Klaus Dehmer · Kelkheim, DE
• Klaus Kaiser · Neustadt, DE
• Karl Rehn

Key dates

• Filing date: Jun 25, 1981
• Grant date: Oct 19, 1982
• Expiry date: Jun 25, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Substituted 4-phenoxy-phenols are prepared by adding the corresponding anilines in liquid or molten state together with aqueous sodium nitrite solution in equimolar amounts to excess HCl and introducing the diazonium chloride solution obtained into a boiling mixture of about half-concentrated H.sub.2 SO.sub.4 and an aromatic hydrocarbon.