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Conférence Dr. Rafael GRAMAGE-DORIA
vendredi 16 juin 2023 de 11:00 - 12:00
Dr. Rafael GRAMAGE-DORIA
Institut des Sciences Chimiques de Rennes
“From sustainable transformations to supramolecular approaches in catalysis”
Dr. Rafael GRAMAGE-DORIA
Institut des Sciences Chimiques de Rennes
“From sustainable transformations to supramolecular approaches in catalysis”
The generation of more efficient, atom- and step-economy transformations is of primary importance to meet the societal challenges associated the 21st century. In this context, transition metal catalysis is an enabling technology and in our laboratories we have developed a number of sustainable approaches dealing with C-H bond functionalizations, one-pot multi-step sequences, direct reductive aminations, and oxidations.[1] They aim at minimizing chemical wastes while controlling metal’s activity and selectivity. On another hand, we have developed metal-catalyzed transformations which are controlled by remote, kinetically labile interactions taking place in the secondary coordination sphere of the metal catalyst.[2] In particular, we have exploited the reversible binding between nitrogencontaining substrates and metalloporphyrins via Zn…N weak interactions as a tool for the design of supramolecular catalysts. These supramolecular catalysts feature unique atom-precise selectivities that enables to tackle challenging chemical transformations besides displaying enzyme-like behaviors such as substrate selectivity and Michaelis-Menten kinetics.[3]
References:
[1] For selected examples see:
(a) Adv. Synth. Catal. 2016, 358, 3847; (b) Org. Lett. 2017, 19, 6404; (c) Catal. Sci. Technol. 2019, 9, 4711; (d) Catal. Sci. Technol. 2020, 10, 180; (e) Catal. Sci. Technol. 2021, 11, 5772; (f) Chem. Eur. J. 2022, 28, e202201078; (g) Org. Chem. Front. 2023, 10, 42; (h) ACS Catal. 2023, 13, 4421; (i) ACS Catal. 2023, 13, 2367.
[2] For reviews, see:
(a) Chem. Soc. Rev. 2021, 50, 3565; (b) Angew. Chem. Int. Ed. 2023, 62, e202211016.
[3] (a) Chem. Eur. J. 2017, 23, 5033; (b) Chem. Eur. J. 2019, 25, 627; (c) Angew. Chem. Int. Ed. 2021, 60, 18006; (d) Chem. Eur. J. 2022, 28, e202201970; (e) Faraday Discuss. 2023, in press; (f) ACS Catal. 2023, preliminary accepted.