Phenylcyclohexanes and a liquid-crystalline medium

US5458805A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Andreas Wachtler · Griesheim, DE
• Reinhard Hittich · Seeheim-Jugenheim, DE
• Eike Poetsch · Mühltal, DE
• Herbert Plach · Darmstadt, DE
• David Coates · Bishop's Stortford, GB
• Bernhard Rieger · Langenau, DE
• Joachim Krause · Dieburg, DE

Key dates

• Filing date: Apr 15, 1993
• Grant date: Oct 17, 1995
• Expiry date: Apr 15, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel phenylcyclohexanes of the formula I ##STR1## in which n is 0 to 7, Q.sup.1 and Q.sup.2 are H, or one of these radicals is alternatively CH.sub.3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q.sup.1 =Q.sup.2 =H and simultaneously X=CN, Y and/or Z are F.