PREPARATION OF alpha,beta-ETHYLENICALLY UNSATURATED CARBOXYLIC SALTS BY CATALYTIC CARBOXYLATION OF ALKENES

PREPARATION OF alpha,beta-ETHYLENICALLY UNSATURATED CARBOXYLIC SALTS BY CATALYTIC CARBOXYLATION OF ALKENES

In a process for preparing an alkalimetalor alkaline earth metal salt of an alpha,beta-ethylenically unsaturated carboxylic acid, a)a transition metal-alkene complex is reacted with CO2 to give a metallalactone, b)the metallalactone is reacted with a base to give an adduct of the alkalimetal or alka...

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Bibliographische Detailangaben
Hauptverfasser: LEJKOWSKI, MICHAEL LUDWIK, ROTHER, JÖRG, BODIZS, GABRIELLA EVA, LIMBACH, MICHAEL, KAGEYAMA, TAKEHARU, FUTTER, CORNELIA, SCHUNK, STEPHAN, LINDNER, RONALD
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:In a process for preparing an alkalimetalor alkaline earth metal salt of an alpha,beta-ethylenically unsaturated carboxylic acid, a)a transition metal-alkene complex is reacted with CO2 to give a metallalactone, b)the metallalactone is reacted with a base to give an adduct of the alkalimetal or alkaline earth metal salt of the alpha,beta-ethylenically unsaturated carboxylic acid with the transition metal complex, and c)the adduct is reacted with an alkene to release the alkalimetalor alkaline earth metalsalt of the alpha,beta-ethylenically unsaturated carboxylic acid and regenerate the transition metal-alkene complex. The baseis selected from alkalimetal 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.