Process for preparing an unsaturated carboxylic acid salt

US10138196B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Schaub · Ludwigshafen, DE
• Nuria Huguet Subiela · Ludwigshafen, DE
• Rocco Paciello · Bad Dürkheim, DE
• Donata Maria Fries · Mannheim, DE
• Simone Manzini · Vercelli, IT

Key dates

• Filing date: May 9, 2016
• Grant date: Nov 27, 2018
• Expiry date: May 9, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A catalytic process for preparing an α,β-ethylenically unsaturated carboxylic acid salt from an alkene, carbon dioxide and an alkoxide having a secondary or tertiary carbon atom directly bound to a [O−] group is described. The alcohol byproduct is distilled off after an intermediate phase separation. This provides pure β,β-ethylenically unsaturated carboxylic acid salt at minimum effort.