Process for preparing substituted 4-methylidenecinnamic acid derivatives

US5639883A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Eike Poetsch · Mühltal, DE
• Volker Meyer · Groß-Zimmern, DE
• Ulrich Heywang · Darmstadt, DE
• Inge Stein · Rodgau, DE
• Michael Schwarz · Pocking, DE
• Michael Kompter · Riedstadt, DE

Key dates

• Filing date: Jun 6, 1995
• Grant date: Jun 17, 1997
• Expiry date: Jun 6, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/824
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for preparing substituted 4-methylidenecinnamic acid derivatives of Formula (I). ##STR1## The variables are defined herein. The compounds of Formula (I) can be used, for example, as UV absorbers.