Method for preparing di- or tricarboxylic esters by alkoxycarbonylation of dienes having conjugated double bonds

US9981903B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Kaiwu Dong · Shangchuan, CN
• Ralf Jackstell · Rostock, DE
• Matthias Beller · Ostseebad Nienhagen, DE
• Dirk Fridag · Haltern am See, DE
• Dieter Hess · Marl, DE
• Katrin Marie Dyballa · Recklinghausen, DE
• Frank Geilen · Haltern am See, DE
• Robert Franke · Marl, DE

Key dates

• Filing date: Jul 17, 2017
• Grant date: May 29, 2018
• Expiry date: Jul 17, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J27/13
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for preparing di- or tricarboxylic esters by alkoxycarbonylation of dienes having conjugated double bonds. The method includes the steps of initially charging a diene having two conjugated double bonds, adding a phosphine ligand according to formula (I) and a catalyst precursor, adding an alcohol, feeding in CO, and heating the reaction mixture with conversion of the diene to a di- or tricarboxylic ester.