Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Jean-Christian Lemay"'
Publikováno v:
ACS Catalysis. 12:12186-12194
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b594219ac15737087cc50f06d9a514
https://doi.org/10.1021/acscatal.2c03253
https://doi.org/10.1021/acscatal.2c03253
Publikováno v:
Angewandte Chemie. 134
Scanning tunneling microscopy (STM) data for α-ketoester/1-(1-naphthyl)ethylamine complexes on Pt(111) reveal a tumbling motion that couples two neighboring binding states. The interconversion, resulting in prochiral inversion of the α-ketoester, o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8a590cbb6e0c5636f9d893403e6a4b9
https://doi.org/10.1002/ange.202210076
https://doi.org/10.1002/ange.202210076
Autor:
Peter H. McBreen, Vincent Albert, Jean-Christian Lemay, Michael N. Groves, Monica Inouye, Yi Dong, John Boukouvalas
Publikováno v:
ACS Catalysis. 10:3034-3041
Enantioselectivity in heterogeneous catalysis can be induced through the adsorption of optically active compounds known as chiral modifiers. The modifiers typically stereodirect prochiral reactants...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f680bd0e0407fa0713b83a4b5c621e9f
https://doi.org/10.1021/acscatal.9b04682
https://doi.org/10.1021/acscatal.9b04682
Autor:
Jean-Christian Lemay, Christian Sarra-Bournet, Nicolas Doiron-Leyraud, Olivier Gagnon-Gordillo, Catherine Gendreau, Nicolas Godbout, Lysanne Picard
Publikováno v:
Science & Diplomacy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::381f031ff33296f7f8145f7b8e4e8ad4
https://doi.org/10.1126/scidip.ade6833
https://doi.org/10.1126/scidip.ade6833
Autor:
Yi Dong, Raphaël Lafleur-Lambert, Jean-Christian Lemay, Guillaume Goubert, Michael N. Groves, John Boukouvalas, Vincent Demers-Carpentier, Peter H. McBreen, Bjørk Hammer
Publikováno v:
Lemay, J-C, Dong, Y, Groves, M N, Demers-Carpentier, V, Goubert, G, Lafleur-Lambert, R, Boukouvalas, J, Hammer, B & McBreen, P H 2016, ' A comparative study of diastereomeric complexes formed by a prochiral substrate and three structurally analogous chiral molecules on Pt(111) ', Surface Science, vol. 646, pp. 13-18 . https://doi.org/10.1016/j.susc.2015.11.018
A comparative study of chemisorbed bimolecular diastereomeric complexes formed by three structurally analogous chiral modifiers and a prochiral substrate on Pt(111) was performed using scanning tunneling microscopy (STM) and density functional theory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cd5e218559d668f18d394ec859d60f8
https://doi.org/10.1016/j.susc.2015.11.018
https://doi.org/10.1016/j.susc.2015.11.018
Autor:
Michael N. Groves, Peter H. McBreen, Bjørk Hammer, Guillaume Goubert, Jean-Christian Lemay, Yi Dong
Publikováno v:
Dong, Y, Goubert, G, Groves, M N, Lemay, J-C, Hammer, B & McBreen, P H 2017, ' Structure and Dynamics of Individual Diastereomeric Complexes on Platinum : Surface Studies Related to Heterogeneous Enantioselective Catalysis ', Accounts of Chemical Research, vol. 50, no. 5, pp. 1163-1170 . https://doi.org/10.1021/acs.accounts.6b00516
CONSPECTUS: The modification of heterogeneous catalysts through the chemisorption of chiral molecules is a method to create catalytic sites for enantioselective surface reactions. The chiral molecule is called a chiral modifier by analogy to the term
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95c1db0ab536a80fda6815314c3d6000
https://pure.au.dk/portal/da/publications/structure-and-dynamics-of-individual-diastereomeric-complexes-on-platinum(283b3880-4ad5-4112-a868-9fdbdfacd628).html
https://pure.au.dk/portal/da/publications/structure-and-dynamics-of-individual-diastereomeric-complexes-on-platinum(283b3880-4ad5-4112-a868-9fdbdfacd628).html
Autor:
Anton M. H. Rasmussen, Vincent Demers-Carpentier, Bjørk Hammer, Jean-Christian Lemay, Michael N. Groves, Yi Dong, Peter H. McBreen, Guillaume Goubert
Publikováno v:
Groves, M N, Goubert, G, Rasmussen, A M H, Dong, Y, Lemay, J C, Demers-Carpentier, V, McBreen, P H & Hammer, B 2014, ' Structure determination of chemisorbed chirality transfer complexes: Accelerated STM analysis and exchange-correlation functional sensitivity ', Surface Science, vol. 629, pp. 48-56 . https://doi.org/10.1016/j.susc.2014.03.008
Linking STM images to atomic positions determined by DFT calculations is an important step in characterizing the intermolecular interactions at play in many surface processes including asymmetric hydrogenation on heterogeneous catalysts. An accelerat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e0a6c3543d376a7b563c185a5f2f51a
https://doi.org/10.1016/j.susc.2014.03.008
https://doi.org/10.1016/j.susc.2014.03.008
Autor:
Peter H. McBreen, Guillaume Goubert, John Boukouvalas, Vincent Demers-Carpentier, Raphaël Lafleur-Lambert, Jean-Christian Lemay, Richard P. Loach
Publikováno v:
ACS Catalysis. 3:2677-2683
As established by Baiker and co-workers, pantoyl-naphthylethylamine (PNEA) is an efficient synthetic chiral modifier for the asymmetric hydrogenation of ketopantolactone (KPL) to pantolactone on supported Pt catalysts. We report a scanning tunneling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38f7925173fb44a1f22e1dffc59db28f
https://doi.org/10.1021/cs4007588
https://doi.org/10.1021/cs4007588
Autor:
Anton M. H. Rasmussen, Federico Masini, Yi Dong, Yang Zeng, Guillaume Goubert, Vincent Demers-Carpentier, Lara Ferrighi, Peter H. McBreen, Bjørk Hammer, Jean-Christian Lemay
Publikováno v:
Demers-Carpentier, V, Rasmussen, A M H, Goubert, G, Ferrighi, L, Dong, Y, Lemay, J-C, Masini, F, Zeng, Y, Hammer, B & McBreen, P H 2013, ' Stereodirection of an α-ketoester at sub-molecular sites on chirally modified Pt(111): Heterogeneous asymmetric catalysis ', Journal of the American Chemical Society, vol. 135, no. 27, pp. 9999-10002 . https://doi.org/10.1021/ja403955k
Chirally modified Pt catalysts are used in the heterogeneous asymmetric hydrogenation of α-ketoesters. Stereoinduction is believed to occur through the formation of chemisorbed modifier–substrate complexes. In this study, the formation of diastere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dca35d8e4d6a8d0ba60e622e900e700
https://doi.org/10.1021/ja403955k
https://doi.org/10.1021/ja403955k
Autor:
Peter H. McBreen, Guillaume Goubert, Bjørk Hammer, Jean-Christian Lemay, Michael N. Groves, Yi Dong
Publikováno v:
Goubert, G, Dong, Y, Groves, M N, Lemay, J-C, Hammer, B & McBreen, P H 2017, ' Monitoring interconversion between stereochemical states in single chirality-transfer complexes on a platinum surface ', Nature Chemistry, vol. 9, no. 6, pp. 531-536 . https://doi.org/10.1038/NCHEM.2753
Elementary steps in enantioselective heterogeneous catalysis take place on the catalyst surface and the targeted synthesis of a desired enantiomer requires the implantation of chiral information at the surface, which can be achieved-for example-by ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2870feae1e6676d7d9a8a1dfc71a7a03
https://pubmed.ncbi.nlm.nih.gov/28537600
https://pubmed.ncbi.nlm.nih.gov/28537600