Basf Se Corporation

Ronald Lindner

Michael Limbach

Michael Ludwik Lejkowski

Stephan Andreas Schunk

Sirus Zarbakhsh

Peter Deglmann

Achim Loeffler

Kerstin Wiss

Miriam Bru Roig

Alvaro Gordillo

Nuria Huguet Subiela

Takeharu Kageyama

Lothar Riebel

Ivana Jevtovikj

Julia Frauke Grosse-Willerich

Sabine Chantal Eileen Stieber

Severine Lavy

Julia Frauke Grosse

Gabriella Eva Bodizs

Cornelia Futter

Jörg Rother

Michael Lejkowski

Catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, comprising reacting an alkene and carbon dioxide in the presence of a carboxylation catalyst and releasing the &#x3b1;,&#x3b2;-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 &#x3b1;,&#x3b2;ethylenically unsaturated carboxylic acid derivatives from COand an alkene is provided.

Process for preparing an unsaturated carboxylic acid salt

Catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, wherein an alkene and carbon dioxide are reacted in the presence of a carboxylation catalyst and in the presence of a specific aryloxide to obtain the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, the carboxylation catalyst being a transition metal complex. The process allows for efficient preparation of &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid derivatives from COand an alkene.

Process for preparing an unsaturated carboxylic acid salt using an aryloxide

The present invention relates to a process for organocatalytic ring-opening polymerization of at least one monomer M suitable for ring-opening polymerization, or of mixtures thereof, wherein, in a step (i), at least one N-heterocyclic compound is subjected in the presence of at least one Zerevitinov-active compound Z1 to a temperature of at least 80&#xb0; C. for a period of at least 30 seconds and, in a step (ii), the monomer M is added and reacted.

Process for organocatalytic ring-opening polymerization

The present invention relates to a process for preparing polyetherols by catalytic ring-opening polymerization, wherein at least one nitrogen-containing cyclic precatalyst compound is used.

Process for preparing polyether polyols

In a process for preparing an alkali metal or alkaline earth metal salt of an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid, a) a transition metal-alkene complex is reacted with COto give a metallalactone, b) the metallalactone is reacted with a base to give an adduct of the alkali metal or alkaline earth metal salt of the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid with the transition metal complex, and c) the adduct is reacted with an alkene to release the alkali metal or alkaline earth metal salt of the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid and regenerate the transition metal-alkene complex. The base is selected from alkali metal or alkaline earth metal hydroxides and alkali metal or alkaline earth metal superbases. The alkene is, for example, ethene. The transition metal complex comprises, for example, nickel and a bidentate P,P, P,N, P,O or P,carbene ligand, such as 1,2-bis(di-tert-butylphosphino)ethane.

Preparation of &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic salts by catalytic carboxylation of alkenes

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Dossenheim, Germany

Ronald Lindner