Process for preparing oximes

US6566555B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Georg Thiele · Hanau, DE
• Steffen Hasenzahl · Hanau, DE
• Thomas Schiffer · Haltern, DE

Key dates

• Filing date: Sep 26, 2001
• Grant date: May 20, 2003
• Expiry date: Sep 26, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Oximes are prepared by reacting carbonyl compounds, hydrogen peroxide and ammonia in the presence of a catalyst system comprising a catalyst comprising titanium, silicon and oxygen and a cocatalyst comprising an acidic solid comprising an organic or inorganic support material, where either the support material itself has Lewis-acid or Brönsted acid properties, or Lewis-acid or Brönsted-acid functional groups are applied to the support material.