Process for preparing an unsaturated carboxylic acid salt

US10011551B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Michael Limbach · Worms, DE
• Ivana Jevtovikj · Heidelberg, DE
• Nuria Huguet Subiela · Ludwigshafen, DE
• Alvaro Gordillo · Heidelberg, DE
• Sabine Chantal Eileen Stieber · Heidelberg, DE
• Ronald Lindner · Dossenheim, DE
• Miriam BRU ROIG · Heidelberg, DE
• Michael Lejkowski · Neckargemünd, DE
• Takeharu Kageyama · Heidelberg, DE
• Stephan Schunk · Heidelberg, DE

Key dates

• Filing date: May 13, 2015
• Grant date: Jul 3, 2018
• Expiry date: May 13, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/847
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Catalytic process for preparing an α,β-ethylenically unsaturated carboxylic acid salt, comprising reacting an alkene and carbon dioxide in the presence of a carboxylation catalyst and releasing the α,β-ethylenically unsaturated carboxylic acid salt with a base, the carboxylation catalyst being a transition metal complex, which comprises a structurally constrained bidentate P,X ligand, wherein X is selected from the group consisting of P, N, O, and carbene, the P and X atom are separated by 2 to 4 bridging atoms, and wherein the bridging atoms are part of at least one 5- to 7-membered cyclic substructure. A further catalytic processes for preparing α,βethylenically unsaturated carboxylic acid derivatives from CO2 and an alkene is provided.