Process for preparing 4,4'-dimethyl-1,1'-binaphthyl

US5522982A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Stephan Brietzke · Altendiez, DE
• Hans Millauer · Eschborn, DE

Key dates

• Filing date: Mar 28, 1995
• Grant date: Jun 4, 1996
• Expiry date: Mar 28, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2/82
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing 4,4'-dimethyl-1,1'-binaphthyl, by electrochemically oxidatively dimerizing 1-methylnaphthalene in the presence of acetonitrile/water/conducting salt mixtures which additionally contain at least one further component which is immiscible or only partially miscible with water.