Pyran derivatives containing an exocyclic double bond

US7314943B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Eike Poetsch · Mühltal, DE
• Volker Meyer · Groß-Zimmern, DE
• Werner Binder · Dieburg, DE
• Michael Heckmeier · Bensheim, DE
• Georg Luessem · Petershausen, DE
• Stephan Guertler · Griesheim, DE

Key dates

• Filing date: May 25, 2004
• Grant date: Jan 1, 2008
• Expiry date: Jan 1, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to pyran derivatives of formula Iand processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media.