Process for the preparation of 2,2 dialkyl-arylidene-cycloalkanones

US5663447A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Nikolaus Muller · Monheim, DE
• Thomas Essert · Overath, DE

Key dates

• Filing date: Jun 20, 1996
• Grant date: Sep 2, 1997
• Expiry date: Jun 20, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C49/683
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A particularly advantageous process for the preparation of 2,2-dialkyl-arylidene-cycloalkanones is characterized in that 2-alkyl-arylidene-cycloalkanones are reacted with alkyl halides in the presence of metal hydroxides and tertiary alcohols.