Bimetallic complexes and the use thereof in producing diaryl carbonate

US8987446B2 · kind B2 · utility

Assignee

• Bayer Intellectual Property GmbH · DE

Inventors

• Christoph Gürtler · Cologne, DE
• Thomas Ernst Müller · Aachen, DE
• Pieter Ooms · Krefeld, DE
• Johann Rechner · Krefeld, DE
• Friedhelm Risse · Hanerau-Hademarschen, DE
• Angelina Prokofieva · Aachen, DE
• Franco Doro · Aachen, DE
• Burkhard Kohler · Leverkusen, DE
• Walter Leitner · Aachen, DE
• Aurel Wolf · Wülfrath, DE

Key dates

• Filing date: Dec 9, 2010
• Grant date: Mar 24, 2015
• Expiry date: Dec 9, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C68/01
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.