Dibenzofuran derivatives and dibenzothiophene derivatives

US11236063B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Lars Lietzau · Darmstadt, DE
• Achim Goetz · Zwingenberg, DE
• Harald Hirschmann · Darmstadt, DE
• Martin Engel · Libertyville, US

Key dates

• Filing date: Jun 11, 2018
• Grant date: Feb 1, 2022
• Expiry date: Jul 19, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3408
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I in which groups and parameters that occur have the definitions given in the disclosure. Preparation methods for these compounds. Uses of the compounds as components in liquid-crystalline media. Electrooptical display elements comprising the liquid-crystalline media.