Patent Number: 7,612,243

Title: Cyclopenta[b]naphthalene derivatives

Abstract: The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media. ##STR00001##

Inventors: Lietzau; Lars (Darmstadt, DE), Bremer; Matthias (Darmstadt, DE), Klasen-Memmer; Melanie (Heuchelheim, DE), Heckmeier; Michael (Hemsbach, DE)

Assignee: Merck Patent GmbH

International Classification: C07C 25/22 (20060101); C07C 23/08 (20060101); C07C 23/18 (20060101); C07D 319/06 (20060101); C07D 309/00 (20060101); C07C 23/24 (20060101); C07C 23/26 (20060101); C07C 23/40 (20060101)

Expiration Date: 1/03/02017