A CO2-based route to acrylates and their downstream products is economically highly attractive, but, due to thermodynamic and kinetic hurdles, also highly challenging. Since the revolutionary work of Hoberg,[1] nickelalactones (1  ) are discussed as possible intermediates in a hypothetic catalytic cycle but i) an oxidative coupling of CO2 and ethylene occurs for selected ligands at low temperature (A  ), ii) despite first attempts,[2] the productive �-H elimination (B  ) is unknown as are, iii) Nickel acrylate complexes (C  ), and iv) the final ligand exchange of p-complexes to ethylene to re-initiate the cycle (D ).The first homogeneous catalyst system ever based on a Ni-complex is presented. It permits the clearly catalytic synthesis of Na-acrylate from CO2, ethylene and a base, as demonstrated by a TON > 10 at this stage.[3][1] H. Hoberg, Y. Peres, C. Kr�ger, Y. H. Tsay, Angew. Chem. Int. Ed. 1987  , 26, 771-773.[2] R. Fischer, J. Langer, A. Malassa, D. Walther, H. G�rls, G. Vaughan, Chem Commun. 2006 , 2510-2512.[3] M. L. Lejkowski, R. Lindner, T. Kageyama, G. �. B�dizs, P. N. Plessow, I. B. M�ller, A. Sch�fer, F. Rominger, P. Hofmann, C. Futter, S. A. Schunk, M. Limbach, Chem. Eur. J. 2012  , DOI: 10.1002/chem.201201757.

Catalytic route to acrylates from alkenes and CO<sub>2</sub>

245th National Meeting (2013)

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Catalytic route to acrylates from alkenes and CO2

Catalytic route to acrylates from alkenes and CO₂