Process for Pd-catalyzed hydroxycarbonylation of diisobutene: effect of solvent

US10494324B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Rui Sang · Liaocheng, CN
• Peter Kucmierczyk · Herne, DE
• Kaiwu Dong · Shangchuan, CN
• Ralf Jackstell · Rostock, DE
• Matthias Beller · Ostseebad Nienhagen, DE
• Robert Franke · Marl, DE

Key dates

• Filing date: Dec 11, 2018
• Grant date: Dec 3, 2019
• Expiry date: Dec 11, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C53/128
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for Pd-catalyzed hydroxycarbonylation of diisobutene in an acetic acid solvent in the presence of a ligand having the following structure: In contrast to reaction solvents such as formic acid or 3,5,5 hexanoic acid the conversion rates were improved and greater than 90% at a reaction temperature of 120° C. and CO pressure of 40 bar.