Carbocyclic six-membered ring compounds

US4578210A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Klaus Praefcke · Berlin, DE
• Bernd Kohne · Berlin, DE
• Wadi Poules · Berlin, DE
• Rudolf Eidenschink · Mainz, DE
• Bernhard Scheuble · Alsbach, DE

Key dates

• Filing date: Sep 13, 1984
• Grant date: Mar 25, 1986
• Expiry date: Sep 13, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Six-membered ring compounds of the formula I ##STR1## wherein A is a benzene or cyclohexane ring, PA0 X.sup.1 to X.sup.6 independently of one another in each case are H, --OR, --COOR, --SR, --SOR, --SO.sub.2 R or, if A is a cyclohexane ring, also --O--COR, and PA0 R is in each case an alkyl group which has up to 15 C atoms and in which one or two CH.sub.2 groups can be replaced by O atoms, at least three of the substituents X.sup.1 to X.sup.6 being other than H, can be used as constituents of discotic liquid-crystal phases for liquid-crystal display elements.