0000000000073533
AUTHOR
Quentin Bonnin
P-Chirogenic Triazole-Based Phosphine: Synthesis, Coordination Chemistry, and Asymmetric Catalysis
A Straightforward Route to Homoallyl-Homocrotylamines Promoted by a Titanium Complex
I�-Allyltitanium complexes, generated in situ from 1,3-dienes and Cp2TiH, react with benzotriazole derivatives to give homoallylic amines in good yields. Under similar conditions, triple cascade reactions (allyltitanation followed by cationic 2-aza-Cope rearrangement followed by a second allyltitanation) occur from bis(benzotriazolyl) compounds affording a straightforward route to homoallyl-(E)-homocrotylamines. A theoretical study provides further insight into the factors that govern the selectivity of this sequence of reactions. The titanium-promoted reductive coupling of 1,3-dienes with bis(benzotriazolyl) compounds as substrates led selectively to homoallyl-homocrotylamines through a tr…
Fluorogenic Enzyme-Triggered Domino Reactions Producing Quinoxalin-2(1H)-one-based Heterocycles
International audience; A simple and effective biocompatible domino reaction triggered by a model protease and leading to formation of strongly fluorescent quinoxalin-2(1H)-one N-heterocycles is described. Some positive attributes including versatility and ability to provide outstanding fluorescence "OFF-ON" responses were revealed by this work. They open the way for practical applications of this novel type of "covalent-assembly" based fluorescent probes in the fields of sensing and bioimaging. Among the myriad of synthetic transformations and catalysts currently available for concise and efficient synthesis of organic molecules, bioinspired approaches based on the use of enzymes often int…
A Novel Enzyme-Triggered Domino Reaction Producing Fluorescent Quinoxalin-2(1H)-One-Based Heterocycles
A simple and effective biocompatible domino reaction triggered by a model protease and leading to formation of strongly fluorescent quinoxalin-2(1H)-one N-heterocycles is described. Some positive attributes including versatility and ability to provide outstanding fluorescence "OFF-ON" responses were revealed by this work. They open the way for practical applications of this novel type of "covalent-assembly" based fluorescent probes in the fields of sensing and bioimaging.; A simple and effective biocompatible domino reaction triggered by a model protease and leading to formation of strongly fluorescent quinoxalin-2(1H)-one N-heterocycles is described. Some positive attributes including vers…
Phenoxyamidine Zn and Al Complexes: Synthesis, Characterization, and Use in the Ring-Opening Polymerization of Lactide
International audience; Herein we report the synthesis of new ditopic ligands, which consist of a phenoxy group and N,N,N'trisubstituted amidines linked by a methylene spacer (L1-L4). Their coordination chemistry has been studied/investigated with Zn(II) and Al(III). Alkane elimination route between the phenol-amidine proligands (L1H-L4H) and Et2Zn led to dinuclear complexes [(L1-L4)ZnEt]2 (1a-4a) in which the Zn centers are chelated by phenoxyamidine ligands and bridged through the oxygen atom of the phenoxy groups. Salt metathesis reaction between two equivalents of the sodium amidine phenate L1Na and ZnCl2 led to a bis-chelate chiral spiro-complex (L12Zn) 1a'. Analogous alkane eliminatio…
Coordinatively Unsaturated Amidotitanocene Cations with Inverted σ and π Bond Strengths: Controlled Release of Aminyl Radicals and Hydrogenation/Dehydrogenation Catalysis
Cationic amidotitanocene complexes [Cp2 Ti(NPhAr)][B(C6 F5 )4 ] (Cp=η5 -C5 H5 ; Ar=phenyl (1 a), p-tolyl (1 b), p-anisyl (1 c)) were isolated. The bonding situation was studied by DFT (Density Functional Theory) using EDA-NOCV (Energy Decomposition Analysis with Natural Orbitals for Chemical Valence). The polar Ti-N bond in 1 a-c features an unusual inversion of σ and π bond strengths responsible for the balance between stability and reactivity in these coordinatively unsaturated species. In solution, 1 a-c undergo photolytic Ti-N cleavage to release Ti(III) species and aminyl radicals ⋅NPhAr. Reaction of 1 b with H3 BNHMe2 results in fast homolytic Ti-N cleavage to give [Cp2 Ti(H3 BNHMe2 )…
A Route toward (Aminomethyl)cyclopentadienide Ligands and Their Group 4 Metal Complexes
International audience
ChemInform Abstract: A Straightforward Route to Homoallyl-Homocrotylamines Promoted by a Titanium Complex.
This publication also contains theoretical studies and calculations concerning the reaction.
The Taming of Redox‐Labile Phosphidotitanocene Cations
International audience; Tame d0 phosphidotitanocene cations stabilized with a pendant tertiary phosphane arm are reported. These compounds were obtained by one-electron oxidation of d1 precursors with [Cp2Fe][BPh4]. The electronic structure of these compounds was studied experimentally (EPR, UV/Vis, and NMR spectroscopy, X-ray diffraction analysis) and through DFT calculations. The theoretical analysis of the bonding situation by using the electron localization function (ELF) shows the presence of π-interactions between the phosphido ligand and Ti in the d0 complexes, whereas dπ–pπ repulsion prevents such interactions in the d1 complexes. In addition, CH–π interactions were observed in seve…
Nouveaux complexes cationiques du groupe 4 comme potentielles paires frustrées de Lewis organométalliques : synthèse, réactivité, catalyse
In 2006, the concept of “frustrated Lewis pairs” (called FLPs) was introduced. The main characteristic of these compounds is their ability to activate cooperatively small molecules without the use of a metal (H2, CO2, alkene alkyne…). Initially based on P/B combination, the concept has been extended to several other main group elements (N/B, P/Al, N/Al …). Recently, FLPs have been extended to the transition metal realm. These organometallic FLPs (OmFLPs) are obviously non-metal free systems but they extend significantly the scope of FLP applications. Seeking to develop such systems, a research toward new omFLP combinations (N/Ti+, N/Zr+) has been initiated in our group, based on the synthes…
Cover Feature: A Route toward (Aminomethyl)cyclopentadienide Ligands and Their Group 4 Metal Complexes (Eur. J. Inorg. Chem. 34/2018)
CCDC 1868748: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1871410: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1871415: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1871416: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1871408: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1825467: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1825466: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1868745: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1953273: Experimental Crystal Structure Determination
Related Article: Jérôme Bayardon, Benjamin Rousselle, Yoann Rousselin, Quentin Bonnin, Raluca Malacea-Kabbara|2020|Eur.J.Org.Chem.|2020|4723|doi:10.1002/ejoc.202000723
CCDC 1825460: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1868749: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1825463: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1871418: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1953272: Experimental Crystal Structure Determination
Related Article: Jérôme Bayardon, Benjamin Rousselle, Yoann Rousselin, Quentin Bonnin, Raluca Malacea-Kabbara|2020|Eur.J.Org.Chem.|2020|4723|doi:10.1002/ejoc.202000723
CCDC 1871412: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1825459: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1871414: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1868747: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1825465: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1937786: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1871411: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1871409: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1825462: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1871417: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430
CCDC 1825461: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1825458: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1868750: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1825464: Experimental Crystal Structure Determination
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
CCDC 1868746: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1868743: Experimental Crystal Structure Determination
Related Article: Florian Chotard, Rosita Lapenta, Anaëlle Bolley, Audrey Trommenschlager, Cédric Balan, Jérôme Bayardon, Raluca Malacea-Kabbara, Quentin Bonnin, Ewen Bodio, Hélène Cattey, Philippe Richard, Stefano Milione, Alfonso Grassi, Samuel Dagorne, Pierre Le Gendre|2019|Organometallics|38|4147|doi:10.1021/acs.organomet.9b00501
CCDC 1871413: Experimental Crystal Structure Determination
Related Article: Adrien T. Normand, Quentin Bonnin, Stéphane Brandès, Philippe Richard, Paul Fleurat-Lessard, Charles H. Devillers, Cédric Balan, Pierre Le Gendre, Gerald Kehr, Gerhard Erker|2019|Chem.-Eur.J.|25|2803|doi:10.1002/chem.201805430