Process for synthesizing .alpha.-substituted ring systems

US6303837A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Christoph Gürtler · Cologne, DE
• Manfred Jautelat · Burscheid, DE

Key dates

• Filing date: Aug 31, 1999
• Grant date: Oct 16, 2001
• Expiry date: Aug 31, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Using the process according to the invention, it is possible to provide, with few reaction steps, a novel route to .alpha.-substituted ring systems, which optionally have further substituents.