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Valorization of Unconventional Lipids from Microalgae or Tall Oil via a Selective Dual Catalysis One-Pot Approach

Valorization of Unconventional Lipids from Microalgae or Tall Oil via a Selective Dual Catalysis One-Pot Approach

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HESS, Sandra K., Natalie S. SCHUNCK, Verena GOLDBACH, Daniela EWE, Peter G. KROTH, Stefan MECKING, 2017. Valorization of Unconventional Lipids from Microalgae or Tall Oil via a Selective Dual Catalysis One-Pot Approach. In: Journal of the American Chemical Society : JACS. 139(38), pp. 13487-13491. ISSN 0002-7863. eISSN 1520-5126. Available under: doi: 10.1021/jacs.7b06957

@article{Hess2017-09-27Valor-40500, title={Valorization of Unconventional Lipids from Microalgae or Tall Oil via a Selective Dual Catalysis One-Pot Approach}, year={2017}, doi={10.1021/jacs.7b06957}, number={38}, volume={139}, issn={0002-7863}, journal={Journal of the American Chemical Society : JACS}, pages={13487--13491}, author={Hess, Sandra K. and Schunck, Natalie S. and Goldbach, Verena and Ewe, Daniela and Kroth, Peter G. and Mecking, Stefan} }

Hess, Sandra K. Schunck, Natalie S. Goldbach, Verena 2017-09-27 Schunck, Natalie S. Mecking, Stefan Ewe, Daniela Mecking, Stefan Kroth, Peter G. eng 2017-11-07T14:07:08Z 2017-11-07T14:07:08Z Goldbach, Verena Hess, Sandra K. A dual catalysis approach enables selective functionalization of unconventional feedstocks composed of complex fatty acid mixtures with highly unsaturated portions like eicosapentaenoate (20:5) along with monounsaturated compounds. The degree of unsaturation is unified by selective heterogeneous hydrogenation on Pd/γ-Al<sub>2</sub>O<sub>3</sub>, complemented by effective activation to a homogeneous carbonylation catalyst [(dtbpx)PdH(L)]<sup>+</sup> by addition of diprotonated diphosphine (dtbpxH<sub>2</sub>)(OTf)<sub>2</sub>. By this one-pot approach, neat 20:5 as a model substrate is hydrogenated to up to 80% to the monounsaturated analogue (20:1), this is functionalized to the desired C<sub>21</sub> α,ω-diester building block with a linear selectivity of over 90%. This catalytic approach is demonstrated to be suitable for crude microalgae oil from Phaeodactylum tricornutum genetically engineered for this purpose, as well as tall oil, an abundant waste material. Both substrates were fully converted with an overall selectivity to the linear α,ω-diester of up to 75%. Kroth, Peter G. Ewe, Daniela Valorization of Unconventional Lipids from Microalgae or Tall Oil via a Selective Dual Catalysis One-Pot Approach

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