Basf Se Corporation

Simone Manzini

Rocco Paciello

Thomas Schaub

Nuria Huguet Subiela

Donata Maria Fries

Oliver Trapp

The present invention relates to a catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, comprising contacting an alkene and carbon dioxide with a carboxylation catalyst being a transition metal complex, an alkoxide, and an organic solvent, to obtain an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, the organic solvent being incompletely miscible with water at a pressure of 1 bar at at least one temperature T and selected from amides and ureas, T being a temperature in the range from 10&#xb0; C. to 90&#xb0; C.

Process for preparing an unsaturated carboxylic acid salt

A catalytic process for preparing an &#x3b1;,&#x3b2;-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 &#x3b2;,&#x3b2;-ethylenically unsaturated carboxylic acid salt at minimum effort.

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Vercelli, Italy

Simone Manzini