Triazolyl-stilbenes

US4233440A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Alfons Dorlars · Leverkusen, DE
• Otto Neuner

Key dates

• Filing date: Apr 23, 1979
• Grant date: Nov 11, 1980
• Expiry date: Apr 23, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D249/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The subject matter are triazolyl-stilbenes of the formula ##STR1## wherein R.sub.1 represents an optionally substituted styryl, biphenylyl or naphthyl radical, R.sub.2 represents hydrogen, halogen, or an alkyl or phenyl radical and R.sub.3 represents nitrile, carboxyl or carboxylic acid ester, as well as their preparation and their use as optical brighteners.