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Han G, Zhang W, Acs E, Paquin A, Ronzon Q, Casaretto N, Nay B. Total Synthesis of Cyclotripeptidic Natural Products Anacine, Aurantiomide C, Polonimides A and C, and Verrucine F. Org Lett 2024; 26:2629-2634. [PMID: 38529937 DOI: 10.1021/acs.orglett.4c00658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
The total synthesis of cyclotripeptidic natural products possessing a central piperazino[2,1-b]quinazolin-3,6-dione core is described through an original strategy involving the pivotal cyclocondensation of an electrophilic homoserine lactone intermediate. The alkylidene group was spontaneously installed by autoxidation during the cyclocondensation process, while the propionamide side chain was introduced through the nickel-catalyzed aminocarbonylation of a bromoethyl intermediate. This last reaction is unprecedented on such highly functionalized intermediates. Finally, we explored structural modifications and interconversions of the natural products. Overall, this work led to anacine, aurantiomide C, polonimides A and C, and verrucine F.
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Affiliation(s)
- Guanghui Han
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Wei Zhang
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Emmanuelle Acs
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Alexis Paquin
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Quentin Ronzon
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA Paris, CNRS, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau Cedex, France
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Ikonnikova VA, Cheibas C, Gayraud O, Bosnidou AE, Casaretto N, Frison G, Nay B. Tandem Hock and Friedel-Crafts reactions allowing an expedient synthesis of a cyclolignan-type scaffold. Beilstein J Org Chem 2024; 20:162-169. [PMID: 38292045 PMCID: PMC10825801 DOI: 10.3762/bjoc.20.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/19/2024] [Indexed: 02/01/2024] Open
Abstract
The Hock cleavage, which is compatible with tandem processes, was applied to the synthesis of 1-aryltetralines through a one-pot transformation from readily available benzyl(prenyl)malonate substrates. After the photooxygenation of the prenyl moiety, the resulting hydroperoxide was directly engaged in a Hock cleavage by adding a Lewis acid. The presence of an aromatic nucleophile in the reaction mixture and that of a benzyl moiety on the substrate resulted in tandem Friedel-Crafts reactions to form the 1-aryltetraline products. These compounds share a close analogy to the cyclolignan natural products. Experimental observations and a DFT study support the involvement of an aldehyde intermediate during the Friedel-Crafts reactions, rather than an oxocarbenium.
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Affiliation(s)
- Viktoria A Ikonnikova
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Cristina Cheibas
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Oscar Gayraud
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Alexandra E Bosnidou
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, F-91128 Palaiseau, France
| | - Gilles Frison
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, 75005 Paris, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, F-91128 Palaiseau, France
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Popovici I, Lognon E, Casaretto N, Monari A, Auffrant A. Electronic Effects in Phosphino-Iminophosphorane Pd II Complexes upon Varying the N Substituent. Chemistry 2024; 30:e202303350. [PMID: 37872737 DOI: 10.1002/chem.202303350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 10/25/2023]
Abstract
Three series of palladium(II) complexes supported by a phosphine-iminophosphorane ligand built upon an ortho-phenylene core were investigated to study the influence of the iminophosphorane N substituent. Cis-dichloride palladium(II) complexes 1 in which the N atom bears an isopropyl (iPr, 1 a), a phenyl (Ph, 1 b), a trimethylsilyl (TMS, 1 c) group or an H atom (1 d) were synthesized in high yield. They were characterized by NMR, IR spectroscopy, HR-mass spectrometry, elemental analysis, and X-ray diffraction. A substantial bond length difference between the Pd-Cl bonds was observed in 1. Complexes 1 a-d were converted into [Pd(LR )Cl(CNt Bu)](OTf)] 2 a-d whose isocyanide is located trans to the iminophosphorane. The corresponding dicationic complexes [Pd(LR )(CNt Bu)2 ](OTf)2 3 a-d were also synthesized, however they exhibited lower stability in solution than 2, the isopropyl derivative 3 a being the most stable of the series. Molecular modeling was performed to rationalize the regioselectivity of the substitution of the single chloride by isocyanide (from 1 to 2) and to study the electronic distribution in the complexes. In particular differences between the TMS and H containing complexes vs. the iPr and Ph ones were found. This suggests that the nature of the N substituent is far from innocent and can help tune the reactivity of iminophosphorane complexes.
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Affiliation(s)
- Ingrid Popovici
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120, Palaiseau, France
| | - Elise Lognon
- ITODYS, Université Paris Cité and CNRS, 75006, Paris, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120, Palaiseau, France
| | - Antonio Monari
- ITODYS, Université Paris Cité and CNRS, 75006, Paris, France
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120, Palaiseau, France
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Schiltz P, Casaretto N, Bourcier S, Auffrant A, Gosmini C. Phosphinoquinoline supported Co II, Ni II, and Fe II complexes: divergent behaviour upon reduction. Dalton Trans 2023; 52:14859-14866. [PMID: 37792445 DOI: 10.1039/d3dt02441e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
The reduction of [CoLBr2], a CoII complex supported by a diisopropylphosphinoquinoline (L) ligand, induced a ligand coupling giving access to a (PNNP) supported CoII complex which was isolated in 70% yield. This complex was formed using a minimum of 2 equivalents of a reductant (either Mn or KC8). The fate of [CoLBr2] in the presence of 1 equivalent of a reductant was more difficult to study; nevertheless, a CoI complex was characterised in the solid state. In order to determine whether this ligand coupling could occur with other 3d metals, L supported FeII and NiII complexes were synthesised. While no compound could be identified upon reduction of [FeLBr2], both [NiLBr2] and [NiL2Br](Br) led to the reduction at the metal center allowing the isolation of an original Ni0 trimer in a satisfactory yield. This study shows the different behaviours of these 3d metal complexes in the presence of a reductant.
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Affiliation(s)
- Pauline Schiltz
- Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France.
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France.
| | - Sophie Bourcier
- Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France.
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France.
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France.
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Roblin A, Casaretto N, Archambeau A. Diastereo- and Enantioselective Palladium-Catalyzed Cycloadditions of 5-Vinyloxazolidine-2,4-diones with Electrophilic Imines. Org Lett 2023; 25:6453-6458. [PMID: 37639245 DOI: 10.1021/acs.orglett.3c01883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Despite the importance of the 4-imidazolidinone scaffold in bioactive compounds or organocatalysts, methodologies to access these nitrogenated heterocycles remain scarce. This manuscript describes a novel preparation of 4-imidazolidinones via a diastereo- and enantioselective (3 + 2) cycloaddition between 5-vinyloxazolidine-2,4-diones (VOxD) and electrophilic imines under palladium catalysis. This work supports the synthetic potential of VOxD as a promising equivalent of the C-C(═O)-N synthon.
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Affiliation(s)
- Antoine Roblin
- Laboratoire de Synthèse Organique, UMR 7652, CNRS, Ecole Polytechnique, ENSTA Paris, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, UMR 9168, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
| | - Alexis Archambeau
- Laboratoire de Synthèse Organique, UMR 7652, CNRS, Ecole Polytechnique, ENSTA Paris, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
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Tannoux T, Mazaud L, Cheisson T, Casaretto N, Auffrant A. Fe II complexes supported by an iminophosphorane ligand: synthesis and reactivity. Dalton Trans 2023; 52:12010-12019. [PMID: 37581245 DOI: 10.1039/d3dt00950e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The synthesis of iron complexes supported by a mixed phosphine-lutidine-iminophosphorane (PPyNP) ligand was carried out. While bidentate κ2-N,N coordination was observed for FeCl2, pincer coordination modes were adopted at cationic iron centers, either through dechlorination of [LFe(PPyNP)Cl2] (1) or direct coordination of PPyNP to Fe(OTf)2. Reaction with tert-butylisocyanide gave access to the diamagnetic octahedral complex [Fe(PPyNP)(CNtBu)3]X2 (X = OTf (4), Cl (4')). Both 1 and 4 were shown to undergo deprotonation of the phosphinomethyl group, but the resulting complexes were not active for the dehydrogenative coupling of hexan-1-ol. The hydrosilylation of acetophenones was catalyzed at room temperature with 1 mol% of a catalyst generated in situ from cationic PPyNP-supported iron triflate complexes and KHBEt3.
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Affiliation(s)
- Thibault Tannoux
- Laboratoire de Chimie Moléculaire (LCM) CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, F-91120 Palaiseau Cedex, France.
| | - Louis Mazaud
- Laboratoire de Chimie Moléculaire (LCM) CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, F-91120 Palaiseau Cedex, France.
| | - Thibault Cheisson
- Laboratoire de Chimie Moléculaire (LCM) CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, F-91120 Palaiseau Cedex, France.
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM) CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, F-91120 Palaiseau Cedex, France.
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire (LCM) CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, F-91120 Palaiseau Cedex, France.
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Šlachtová V, Casaretto N, Brulíková L, Six Y. Bicyclic N-dihalocyclopropylamide derivatives as precursors of nitrogen-containing fused polycyclic systems. Org Biomol Chem 2023; 21:6325-6341. [PMID: 37337777 DOI: 10.1039/d3ob00643c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Examples of carbon-carbon bond-forming cyclisation reactions, involving allyl cations generated by the thermal ring-opening of halocyclopropanes, have been scarcely reported. In this contribution, we are describing the results of a study conducted with N-dihalocyclopropylamide substrates, designed as precursors of cyclic iminium intermediates that were aimed at participating in intramolecular reactions with electron-rich aromatic groups. Competitive side-reactions were identified, and access to the desired polycyclic products was carefully evaluated. The results were found to be strongly dependent on the substitution pattern of the nucleophilic aromatic moieties, as well as on the sizes of the rings of the target products. In spite of the rather moderate yields generally obtained, this approach represents a particularly short and inexpensive route to various interesting nitrogen-containing polycyclic systems, namely benzoindolizidine, benzoquinolizidine, piperidinobenzoazepane and azepanoisoquinoline compounds.
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Affiliation(s)
- Veronika Šlachtová
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM), UMR 9168 CNRS/École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
| | - Lucie Brulíková
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Yvan Six
- Laboratoire de Synthèse Organique (LSO), UMR 7652 CNRS/ENSTA/École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France.
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Scuiller A, Casaretto N, Archambeau A. Diastereo- and Enantioselective (3 + 2) Cycloaddition of a New Aza-π-Allylpalladium Zwitterionic Intermediate. J Org Chem 2023. [PMID: 37424074 DOI: 10.1021/acs.joc.3c00707] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Cycloaddition of azaoxyallyl cations or other C─(C═O)─N synthon precursors is a well-established route toward lactams and other N-heterocycles, but despite the wide synthetic scope of this approach, enantioselective versions remain scarce. We herein report 5-vinyloxazolidine-2,4-diones (VOxD) as a suitable precursor of a new palladium-π-allylpalladium intermediate. In the presence of electrophilic alkenes, (3 + 2) γ-lactam cycloadducts could be formed with a high level of diastereo- and enantioselectivity.
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Affiliation(s)
- Anaïs Scuiller
- Laboratoire de Synthèse Organique, UMR 7652, CNRS, Ecole Polytechnique, ENSTA Paris, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, UMR 9168, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
| | - Alexis Archambeau
- Laboratoire de Synthèse Organique, UMR 7652, CNRS, Ecole Polytechnique, ENSTA Paris, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France
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Popovici I, Barthes C, Tannoux T, Duhayon C, Casaretto N, Monari A, Auffrant A, Canac Y. Phosphonium Ylides vs Iminophosphoranes: The Role of the Coordinating Ylidic Atom in cis-[Phosphine-Ylide Rh(CO) 2] Complexes. Inorg Chem 2023; 62:2376-2388. [PMID: 36704899 DOI: 10.1021/acs.inorgchem.2c04151] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The coordinating properties of two families of ylides, namely, phosphonium ylides and iminophosphoranes, differently substituted at the ylidic center (CH2- vs NiPr-), have been investigated in structurally related cationic phosphine-ylide Rh(CO)2 complexes obtained from readily available phosphine-phosphonium salt precursors derived from an ortho-phenylene bridge. However, while the Rh(CO)2 complex bearing the P+-CH2- donor moiety proved to be stable, the P═NiPr donor end appeared to induce lability to one of the CO groups. All of the RhI carbonyl complexes in both ylide series were fully characterized, including through X-ray diffraction analysis. Based on the experimental and calculated infrared (IR) CO stretching frequencies in Rh(CO)2 complexes, we evidenced that the phosphonium ylide ligand is a stronger donor than the iminophosphorane ligand. However, we also found that the difference in the intrinsic electronic properties can be largely compensated by the introduction of an iPr substituent on the N atom of the iminophosphorane, hence pointing to the noninnocent role of the peripheral substituent and opening novel possibilities to tune the properties of metal complexes containing ylide ligands.
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Affiliation(s)
- Ingrid Popovici
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France
| | - Cécile Barthes
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Thibault Tannoux
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France
| | - Carine Duhayon
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France
| | - Antonio Monari
- ITODYS, Université Paris Cité and CNRS, F-75006 Paris, France
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire (LCM), CNRS, École Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91120 Palaiseau, France
| | - Yves Canac
- LCC-CNRS, Université de Toulouse, CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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El Kaim L, Grimaud L, Vitale M, Cheibas C, Vieu épouse Tota E, Casaretto N. A Mn(OAc)3 triggered formation of cyclopropanes from Ugi adducts. Synlett 2023. [DOI: 10.1055/a-2005-5220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Ugi adducts involving malonic acid monoesters and dialkoxysubstituted aromatic aldehydes can undergo an oxidative dearomatization when treated with Mn(OAc)3 leading to the formation of fused cyclopropanes as observed in the Buchner reaction of diazo compounds
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Affiliation(s)
| | | | - maxime Vitale
- chemistry department, Ecole Normale Superieure, Paris, France
| | - Cristina Cheibas
- Laboratoire de Synthèse Organique, ENSTA Paris, Palaiseau, France
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Joyeux B, Gamet A, Casaretto N, Nay B. Asymmetric synthesis of a stereopentade fragment toward latrunculins. Beilstein J Org Chem 2023; 19:428-433. [PMID: 37091733 PMCID: PMC10113517 DOI: 10.3762/bjoc.19.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/27/2023] [Indexed: 04/25/2023] Open
Abstract
Latrunculins are marine toxins used in cell biology to block actin polymerization. The development of new synthetic strategies and methods for their synthesis is thus important in order to improve, modulate or control this biological value. The total syntheses found in the literature all target similar disconnections, especially an aldol strategy involving a recurrent 4-acetyl-1,3-thiazolidin-2-one ketone partner. Herein, we describe an alternative disconnection and subsequent stereoselective transformations to construct a stereopentade amenable to latrunculin and analogue synthesis, starting from (+)-β-citronellene. Key stereoselective transformations involve an asymmetric Krische allylation, an aldol reaction under 1,5-anti stereocontrol, and a Tishchenko-Evans reduction accompanied by a peculiar ester transposition, allowing to install key stereogenic centers of the natural products.
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Affiliation(s)
- Benjamin Joyeux
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Antoine Gamet
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, 91128 Palaiseau, France
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Ouni A, Moussaoui Y, Casaretto N, Ledoux-Rak I, ALshandoudi LM, Ennaceur N. New Lanthanum coordination complex with high second harmonic generation: Growth, Crystal Structure and physicochemical Characterization. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Ronzon Q, Zhang W, Charote T, Casaretto N, Frison G, Nay B. Total Synthesis of (+)‐Cinereain and (–)‐Janoxepin through a Fragment Coupling/Retro‐Claisen Rearrangement Cascade. Angew Chem Int Ed Engl 2022; 61:e202212855. [DOI: 10.1002/anie.202212855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Quentin Ronzon
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | - Wei Zhang
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | - Thomas Charote
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | | | - Gilles Frison
- Sorbonne Université: Sorbonne Universite Laboratoire de Chimie Théorique FRANCE
| | - Bastien Nay
- Ecole Polytechnique Chemistry Route de Saclay 91128 Palaiseau FRANCE
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Ronzon Q, Zhang W, Charote T, Casaretto N, Frison G, Nay B. Total Synthesis of (+)‐Cinereain and (–)‐Janoxepin through a Fragment Coupling/Retro‐Claisen Rearrangement Cascade. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Quentin Ronzon
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | - Wei Zhang
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | - Thomas Charote
- Ecole Polytechnique Laboratoire de Synthèse Organique FRANCE
| | | | - Gilles Frison
- Sorbonne Université: Sorbonne Universite Laboratoire de Chimie Théorique FRANCE
| | - Bastien Nay
- Ecole Polytechnique Chemistry Route de Saclay 91128 Palaiseau FRANCE
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15
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Schiltz P, Casaretto N, Auffrant A, Gosmini C. Cobalt Complexes Supported by Phosphinoquinoline Ligands for the Catalyzed Hydrosilylation of Carbonyl Compounds. Chemistry 2022; 28:e202200437. [DOI: 10.1002/chem.202200437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Indexed: 01/05/2023]
Affiliation(s)
- Pauline Schiltz
- Laboratoire de Chimie Moléculaire (LCM) CNRS Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91120 Palaiseau France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM) CNRS Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91120 Palaiseau France
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire (LCM) CNRS Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91120 Palaiseau France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire (LCM) CNRS Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91120 Palaiseau France
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16
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Cheibas C, Fincias N, Casaretto N, Garrec J, El Kaïm L. Passerini-Smiles Reaction of α-Ketophosphonates: Platform for Phospha-Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022; 61:e202116249. [PMID: 35001479 DOI: 10.1002/anie.202116249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Indexed: 11/07/2022]
Abstract
The Passerini-Smiles reactions of α-ketophosphonates with nitrophenols has been used as a platform to observe complex cascades involving multiple Smiles transfers coupled with phospha-Brook rearrangement. When using 4-nitrophenols a rare 1,3-Truce-Smiles rearrangement is observed leading to diarylacetamide derivatives. 2-Nitro-derivatives lead to a completely different reactivity pattern that may be explained by a nitro to nitroso conversion followed by a σ-π metathesis. All mechanistic assumptions are confirmed by DFT calculations performed on both families of adducts. The potential of this work has been further demonstrated by the use of N-aryl α-ketoamides as alternative starting materials for these cascades as well as the disclosure of new aza-Nazarov access to hydroxy-indolones.
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Affiliation(s)
- Cristina Cheibas
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Fincias
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM-UMR 9168), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Julian Garrec
- Unité Chimie et Procédés (UCP), ENSTA-Paris, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
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17
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Michalland J, Casaretto N, Zard SZ. A Modular Access to 1,2‐ and 1,3‐Disubstituted Cyclobutylboronic Esters by Consecutive Radical Additions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jean Michalland
- Laboratoire de Synthèse Organique CNRS UMR 7652 Ecole polytechnique 91128 Palaiseau Cedex France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moleculaire CNRS UMR 9168 Ecole polytechnique 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique CNRS UMR 7652 Ecole polytechnique 91128 Palaiseau Cedex France
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18
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El Kaim L, Cheibas C, Fincias N, Casaretto N, Garrec J. Passerini‐Smiles Reaction of a‐Ketophosphonates: Platform for Phospha‐Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- laurent El Kaim
- Ecole Nationale Superieure de Techniques Avancees Chemistry department 828 Bd des mar�chaux 91120 Palaiseau FRANCE
| | - Cristina Cheibas
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | - Nicolas Fincias
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | | | - Julian Garrec
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
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19
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Michalland J, Casaretto N, Zard SZ. A Modular Access to 1,2- and 1,3-Disubstituted Cyclobutylboronic Esters by Consecutive Radical Additions. Angew Chem Int Ed Engl 2021; 61:e202113333. [PMID: 34716652 DOI: 10.1002/anie.202113333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Indexed: 01/22/2023]
Abstract
A modular approach to substituted cyclobutylboronic esters is described. It proceeds by successive intermolecular radical additions of xanthates to pinacolato 1-cyclobutenylboronate and to pinacolato bicyclo[1.1.0]but-1-ylboronate. Success hinges on tuning the stability of the α-boryl radical by exploiting the stabilizing influence of the trivalent boronic ester and the slightly destabilizing cyclobutane, which increases the σ-character of the radical. Reductive removal of the xanthate group finally provides a range of 1,2- and 1,3-disubstituted cyclobutylboronic esters. The contrast with cyclopropylboronic esters is striking, since the strong destabilization by the highly strained cyclopropane ring allows the first radical addition to take place but not the second. Furthermore, the first adducts are geminal xanthyl boronic esters that can be converted into cyclobutanones. This chemistry furnishes cyclobutylboronic esters that would be quite difficult to obtain otherwise and thus complements existing methods.
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Affiliation(s)
- Jean Michalland
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moleculaire, CNRS UMR 9168, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Samir Z Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
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20
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Gayraud O, Laroche B, Casaretto N, Nay B. Synthesis of a Biomimetic Tetracyclic Precursor of Aspochalasins and Formal Synthesis of Trichoderone A. Org Lett 2021; 23:5755-5760. [PMID: 34291937 DOI: 10.1021/acs.orglett.1c01922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aspochalasins are leucine-derived cytochalasins. Their complexity is associated with a high degree of biosynthetic oxidation, herein inspiring a two-phase strategy in total synthesis. We thus describe the synthesis of a putative biomimetic tetracyclic intermediate. The constructive steps are an intramolecular Diels-Alder reaction to install the isoindolone core of cytochalasins, whose branched precursor was obtained from a stereoselective Ireland-Claisen rearrangement performed from a highly unsaturated substrate. This also constitutes a formal synthesis of trichoderone A.
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Affiliation(s)
- Oscar Gayraud
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, Palaiseau 91128, France
| | - Benjamin Laroche
- Unité Molécules de Communication et Adaptation des Microorganismes, Muséum National d'Histoire Naturelle, CNRS, Paris 75005, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Palaiseau 91128, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, Palaiseau 91128, France.,Unité Molécules de Communication et Adaptation des Microorganismes, Muséum National d'Histoire Naturelle, CNRS, Paris 75005, France
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21
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Ronzon Q, Zhang W, Casaretto N, Mouray E, Florent I, Nay B. Programmed Multiple C-H Bond Functionalization of the Privileged 4-hydroxyquinoline Template. Chemistry 2021; 27:7764-7772. [PMID: 33848033 DOI: 10.1002/chem.202100929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Indexed: 11/12/2022]
Abstract
The introduction of substituents on bare heterocyclic scaffolds can selectively be achieved by directed C-H functionalization. However, such methods have only occasionally been used, in an iterative manner, to decorate various positions of a medicinal scaffold to build chemical libraries. We herein report the multiple, site selective, metal-catalyzed C-H functionalization of a "programmed" 4-hydroxyquinoline. This medicinally privileged template indeed possesses multiple reactive sites for diversity-oriented functionalization, of which four were targeted. The C-2 and C-8 decorations were directed by an N-oxide, before taking benefit of an O-carbamoyl protection at C-4 to perform a Fries rearrangement and install a carboxamide at C-3. This also released the carbonyl group of 4-quinolones, the ultimate directing group to functionalize position 5. Our study highlights the power of multiple C-H functionalization to generate diversity in a biologically relevant library, after showing its strong antimalarial potential.
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Affiliation(s)
- Quentin Ronzon
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Wei Zhang
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Elisabeth Mouray
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
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22
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Amelot D, Ahmadpour M, Ros Q, Cruguel H, Casaretto N, Cossaro A, Floreano L, Madsen M, Witkowski N. Deciphering Electron Interplay at the Fullerene/Sputtered TiO x Interface: A Barrier-Free Electron Extraction for Organic Solar Cells. ACS Appl Mater Interfaces 2021; 13:19460-19466. [PMID: 33871979 DOI: 10.1021/acsami.1c01966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Organic photovoltaics (OPVs) technology now offers power conversion efficiency (PCE) of over 18% and is one of the main emerging photovoltaic technologies. In such devices, titanium dioxide (TiOx) has been vastly used as an electron extraction layer, typically showing unwanted charge-extraction barriers and the need for light-soaking. In the present work, using advanced photoemission spectroscopies, we investigate the electronic interplay at the interface between low-temperature-sputtered TiOx and C70 acceptor fullerene molecules. We show that defect states in the band gap of TiOx are quenched by C70 while an interfacial state appears. This new interfacial state is expected to support the favorable energy band alignment observed, showing a perfect match of transport levels, and thus barrier-free extraction of charges, making low-temperature-sputtered TiOx a good candidate for the next generation of organic solar cells.
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Affiliation(s)
- Dylan Amelot
- Sorbonne Université, UMR CNRS 7588, Institut des Nanosciences de Paris, 4 Pl. Jussieu, F-75005 Paris, France
| | - Mehrad Ahmadpour
- SDU NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, Sønderborg DK-6400, Denmark
| | - Quim Ros
- Sorbonne Université, UMR CNRS 7588, Institut des Nanosciences de Paris, 4 Pl. Jussieu, F-75005 Paris, France
| | - Hervé Cruguel
- Sorbonne Université, UMR CNRS 7588, Institut des Nanosciences de Paris, 4 Pl. Jussieu, F-75005 Paris, France
| | - Nicolas Casaretto
- Sorbonne Université, UMR CNRS 7588, Institut des Nanosciences de Paris, 4 Pl. Jussieu, F-75005 Paris, France
| | - Albano Cossaro
- CNR-IOM, Strada Statale 14 km 163.5, Trieste 34149, Italy
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, Trieste 34127, Italy
| | - Luca Floreano
- CNR-IOM, Strada Statale 14 km 163.5, Trieste 34149, Italy
| | - Morten Madsen
- SDU NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, Sønderborg DK-6400, Denmark
| | - Nadine Witkowski
- Sorbonne Université, UMR CNRS 7588, Institut des Nanosciences de Paris, 4 Pl. Jussieu, F-75005 Paris, France
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23
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Scuiller A, Karnat A, Casaretto N, Archambeau A. Vinylcyclopropanes as All-Carbon 1,5-Dipoles: A Reactivity Switch for Palladium-Catalyzed (5 + 4) Cycloadditions. Org Lett 2021; 23:2332-2336. [PMID: 33660513 DOI: 10.1021/acs.orglett.1c00477] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Azonanes were prepared by a palladium-catalyzed (5 + 4) cycloaddition between activated vinylcyclopropanes and 1-azadienes. During this process, the vinylcyclopropane partner displayed an unusual reactivity and behaved as an all-carbon 1,5-dipole. A N,N-bidentate ligand was required to inhibit the formation of thermodynamic (3 + 2) cycloadducts.
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Affiliation(s)
- Anaïs Scuiller
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
| | - Alexandre Karnat
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, UMR 9168, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex France
| | - Alexis Archambeau
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
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24
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Tannoux T, Casaretto N, Bourcier S, Gandon V, Auffrant A. Reaction of Phosphines with 1-Azido-(2-halogenomethyl)benzene Giving Aminophosphonium-Substituted Indazoles. J Org Chem 2021; 86:3017-3023. [PMID: 33356238 DOI: 10.1021/acs.joc.0c02371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction between a 1-azido-(2-halogenomethyl)benzene and a phosphine gives different products depending on the nature of the halogen, the phosphine itself, and the solvent employed. While PPh3 (2 equiv) reacts with the chloro reagent in toluene to give the expected iminophosphorane-phosphonium adduct, trialkylphosphines (PCy3 and PEt3) surprisingly furnish an aminophosphonium substituted by a zwitterionic indazole. The bicyclic product can also form from PPh3 using the bromo reagent in acetonitrile. A mechanism is proposed for this cyclization based on DFT calculations.
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Affiliation(s)
- Thibault Tannoux
- Laboratoire de Chimie Moléculaire, CNRS UMR 9168, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, CNRS UMR 9168, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Sophie Bourcier
- Laboratoire de Chimie Moléculaire, CNRS UMR 9168, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Vincent Gandon
- Laboratoire de Chimie Moléculaire, CNRS UMR 9168, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France.,Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Audrey Auffrant
- Laboratoire de Chimie Moléculaire, CNRS UMR 9168, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
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25
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Weng X, Hennes M, Tran T, Casaretto N, Demaille D, Vidal F, Zheng Y. Orientation and lattice matching of CoNi nanowires embedded in SrTiO 3: unveiling novel strain relaxation mechanisms in vertically aligned nanocomposites. CrystEngComm 2020. [DOI: 10.1039/d0ce00574f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unveiling complex structural rearrangements and novel strain relaxation mechanisms in vertically aligned nanocomposites.
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Affiliation(s)
- Xiaorong Weng
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Marcel Hennes
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Thomas Tran
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Nicolas Casaretto
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Dominique Demaille
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Franck Vidal
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
| | - Yunlin Zheng
- Sorbonne Université
- CNRS-UMR 7588
- Institut des NanoSciences de Paris (INSP)
- F-75005 Paris
- France
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26
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Jaoul A, Yang Y, Casaretto N, Clavaguéra C, Maron L, Nocton G. Atom economical coupling of benzophenone and N-heterocyclic aromatics with SmI 2. Chem Commun (Camb) 2020; 56:11875-11878. [DOI: 10.1039/d0cc05164k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The mechanism of the direct coupling of benzophenone with N-heteroaromatics leading to pyridinemethanols using SmI2 as a unique reagent is unraveled.
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Affiliation(s)
- Arnaud Jaoul
- LCM, CNRS
- Ecole Polytechnique
- Institut polytechnique Paris
- 91128 Palaiseau
- France
| | - Yan Yang
- LPCNO
- UMR 5215
- Université de Toulouse-CNRS
- INSA
- UPS
| | - Nicolas Casaretto
- LCM, CNRS
- Ecole Polytechnique
- Institut polytechnique Paris
- 91128 Palaiseau
- France
| | - Carine Clavaguéra
- Université Paris-Saclay
- CNRS
- Institut de Chimie Physique
- 91405 Orsay
- France
| | | | - Grégory Nocton
- LCM, CNRS
- Ecole Polytechnique
- Institut polytechnique Paris
- 91128 Palaiseau
- France
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27
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Chu A, Martinez B, Ferré S, Noguier V, Gréboval C, Livache C, Qu J, Prado Y, Casaretto N, Goubet N, Cruguel H, Dudy L, Silly MG, Vincent G, Lhuillier E. HgTe Nanocrystals for SWIR Detection and Their Integration up to the Focal Plane Array. ACS Appl Mater Interfaces 2019; 11:33116-33123. [PMID: 31426628 DOI: 10.1021/acsami.9b09954] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Infrared applications remain too often a niche market due to their prohibitive cost. Nanocrystals offer an interesting alternative to reach cost disruption especially in the short-wave infrared (SWIR, λ < 1.7 μm) where material maturity is now high. Two families of materials are candidate for SWIR photoconduction: lead and mercury chalcogenides. Lead sulfide typically benefits from all the development made for a wider band gap such as the one made for solar cells, while HgTe takes advantage of the development relative to mid-wave infrared detectors. Here, we make a fair comparison of the two material detection properties in the SWIR and discuss the material stability. At such wavelengths, studies have been mostly focused on PbS rather than on HgTe, therefore we focus in the last part of the discussion on the effect of surface chemistry on the electronic spectrum of HgTe nanocrystals. We unveil that tuning the capping ligands is a viable strategy to adjust the material from the p-type to ambipolar. Finally, HgTe nanocrystals are integrated into multipixel devices to quantize spatial homogeneity and onto read-out circuits to obtain a fast and sensitive infrared laser beam profile.
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Affiliation(s)
- Audrey Chu
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
- ONERA-The French Aerospace Lab , Chemin de la Hunière, BP 80100 , F-91123 Palaiseau , France
| | - Bertille Martinez
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
- Laboratoire de Physique et d'Étude des Matériaux , ESPCI Paris PSL Research University, Sorbonne Université Univ Paris 06, CNRS , 10 rue Vauquelin 75005 Paris , France
| | - Simon Ferré
- New Imaging Technologies SA , 1 impasse de la Noisette 91370 Verrières le Buisson , France
| | - Vincent Noguier
- New Imaging Technologies SA , 1 impasse de la Noisette 91370 Verrières le Buisson , France
| | - Charlie Gréboval
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
| | - Clément Livache
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
- Laboratoire de Physique et d'Étude des Matériaux , ESPCI Paris PSL Research University, Sorbonne Université Univ Paris 06, CNRS , 10 rue Vauquelin 75005 Paris , France
| | - Junling Qu
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
| | - Yoann Prado
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
| | - Nicolas Casaretto
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
| | - Nicolas Goubet
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
- Sorbonne Université, CNRS, De la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies, MONARIS , F-75005 Paris , France
| | - Hervé Cruguel
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
| | - Lenart Dudy
- Synchrotron-SOLEIL , Saint-Aubin, BP48 , F91192 Gif sur Yvette Cedex , France
| | - Mathieu G Silly
- Synchrotron-SOLEIL , Saint-Aubin, BP48 , F91192 Gif sur Yvette Cedex , France
| | - Grégory Vincent
- ONERA-The French Aerospace Lab , Chemin de la Hunière, BP 80100 , F-91123 Palaiseau , France
| | - Emmanuel Lhuillier
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP , F-75005 Paris , France
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28
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Schaniel D, Casaretto N, Bendeif EE, Pillet S. Wavelength-selective photoisomerisation of NO and NO 2 ligands. Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s2053273319090764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Schaniel D, Casaretto N, Bendeif EE, Woike T, Gallien AKE, Klüfers P, Kutniewska SE, Kamiński R, Bouchez G, Boukheddaden K, Pillet S. Evidence for a photoinduced isonitrosyl isomer in ruthenium dinitrosyl compounds. CrystEngComm 2019. [DOI: 10.1039/c9ce01119f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Photo-induced NO rotation from N-bound (blue) to O-bound (red) with blue light at 100 K in the compound [Ru(NO)2(PCy3)2Cl]BF4.
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Affiliation(s)
| | | | | | - Theo Woike
- Université de Lorraine
- CNRS
- CRM2
- Nancy
- France
| | | | - Peter Klüfers
- Department Chemie der Ludwig-Maximilians-Universität
- 81377 Munich
- Germany
| | | | | | - Guillaume Bouchez
- Groupe d'Etudes de la Matière Condensée
- Université de Versailles
- Université Paris-Saclay
- CNRS UMR 8635
- 78035 Versailles
| | - Kamel Boukheddaden
- Groupe d'Etudes de la Matière Condensée
- Université de Versailles
- Université Paris-Saclay
- CNRS UMR 8635
- 78035 Versailles
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Casaretto N, Schaniel D, Alle P, Wenger E, Parois P, Fournier B, Bendeif EE, Palin C, Pillet S. In-house time-resolved photocrystallography on the millisecond timescale using a gated X-ray hybrid pixel area detector. Acta Crystallogr B Struct Sci Cryst Eng Mater 2017; 73:696-707. [PMID: 28762979 DOI: 10.1107/s2052520617009234] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/19/2017] [Indexed: 11/10/2022]
Abstract
With the remarkable progress of accelerator-based X-ray sources in terms of intensity and brightness, the investigation of structural dynamics from time-resolved X-ray diffraction methods is becoming widespread in chemistry, biochemistry and materials science applications. Diffraction patterns can now be measured down to the femtosecond time-scale using X-ray free electron lasers or table-top laser plasma X-ray sources. On the other hand, the recent developments in photon counting X-ray area detectors offer new opportunities for time-resolved crystallography. Taking advantage of the fast read-out, the internal stacking of recorded images, and the gating possibilities (electronic shutter) of the XPAD hybrid pixel detector, we implemented a laboratory X-ray diffractometer for time-resolved single-crystal X-ray diffraction after pulsed laser excitation, combined with transient optical absorption measurement. The experimental method and instrumental setup are described in detail, and validated using the photoinduced nitrosyl linkage isomerism of sodium nitroprusside, Na2[Fe(CN)5NO]·2H2O, as proof of principle. Light-induced Bragg intensity relative variations ΔI(hkl)/I(hkl) of the order of 1%, due to the photoswitching of the NO ligand, could be detected with a 6 ms acquisition window. The capabilities of such a laboratory time-resolved experiment are critically evaluated.
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Affiliation(s)
- Nicolas Casaretto
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Dominik Schaniel
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Paul Alle
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Emmanuel Wenger
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Pascal Parois
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Bertrand Fournier
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - El Eulmi Bendeif
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Cyril Palin
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
| | - Sébastien Pillet
- CRM2, UMR 7036, Université de Lorraine, 54506 Vandoeuvre-les-Nancy, France
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Schaniel D, Casaretto N, Pillet S, Fournier B, Parois P, Allé P, Wenger E. Time-resolved photocrystallography on a laboratory diffractometer on the millisecond time scale. Acta Crystallogr A Found Adv 2016. [DOI: 10.1107/s2053273316097886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Casaretto N, Fournier B, Pillet S, Bendeif EE, Schaniel D, Gallien AKE, Klüfers P, Woike T. Photo-induced linkage NO isomers in the dinitrosyl complex [Ru(NO)2(PCy3)2Cl](BF4) identified by photocrystallography and IR-spectroscopy. CrystEngComm 2016. [DOI: 10.1039/c6ce00735j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Casaretto N, Pillet S, Bendeif EE, Schaniel D, Gallien AKE, Klüfers P, Woike T. Photocrystallography and IR spectroscopy of light-induced linkage NO isomers in [RuBr(NO)2(PCyp3)2]BF4. Acta Crystallogr B Struct Sci Cryst Eng Mater 2015; 71:788-97. [DOI: 10.1107/s2052520615018132] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/28/2015] [Indexed: 11/10/2022]
Abstract
One single photo-induced linkage NO isomer (PLI) is detected and characterized in the dinitrosyl pentacoordinated compound [RuBr(NO)2(PCyp3)2]BF4 by a combination of photocrystallographic and IR analysis. In the ground state, the molecule adopts a trigonal–bipyramidal structure with the two NO ligands almost linear with angles Ru—N1—O1 = 168.92 (16), Ru—N2—O2 = 166.64 (16)°, and exactly equal distances of Ru—N = 1.7838 (17) and O—N = 1.158 (2) Å. After light irradiation of 405 nm at T = 10 K, the angle of Ru—N2—O2 changes to 114.2 (6)° by rotation of the O atom towards the Br ligand with increased distances of Ru—N2 = 1.992 (6) and N2—O2 = 1.184 (8) Å, forming a bent κN bonded configuration. Using IR spectroscopy, the optimal wavelength and maximum population of 39 (1)% of the PLI is determined. In the ground state (GS), the two symmetric νs(NO) and asymmetric νas(NO) vibrations are measured at 1820 and 1778 cm−1, respectively. Upon photo-irradiation, the detection of only one new vibrational ν(NO) stretching band at 1655 cm−1, assigned to the antisymmetric coupled vibration mode and shifted to lower wavenumbers by −123 cm−1, supports the photocrystallographic result. These experimental results are supported by additional DFT calculations, which reproduce the structural parameters and vibrational properties of both the ground state and the photo-induced linkage isomer well. Especially the experimentally characterized molecular structure of the PLI state corresponds to an energy minimum in the calculations; the stabilization of the bent κN bonded configuration of the PLI state originates from specific intramolecular orbital overlap.
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Casaretto N, Pillet S, Bendeif EE, Schaniel D, Gallien KEA, Klufers P, Woike T. Photo-induced NO linkage isomerism in nitrosyl complexes: a photocrystallographic and infrared analysis. Acta Crystallogr A Found Adv 2015. [DOI: 10.1107/s205327331509796x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Casaretto N, Pillet S, Bendeif EE, Schaniel D, Gallien AKE, Klüfers P, Woike T. Multiple light-induced NO linkage isomers in the dinitrosyl complex [RuCl(NO)2(PPh3)2]BF4 unravelled by photocrystallographic and IR analysis. IUCrJ 2015; 2:35-44. [PMID: 25610626 PMCID: PMC4285879 DOI: 10.1107/s2052252514023598] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/27/2014] [Indexed: 06/04/2023]
Abstract
Multiple light-induced reversible metastable NO linkage isomers (PLIs) have been detected in the dinitrosyl compound [RuCl(NO)2(PPh3)2]BF4 by a combination of photocrystallographic and IR analysis. The IR signature of three PLI states has been clearly identified, with estimated populations of 59% (PLI-1), 8% (PLI-2) and 5% (PLI-3) for a total population of the metastable state of 72%. The structural configuration of the major component (PLI-1) has been derived by X-ray photocrystallography. In the ground state, the structure is characterized by a bent and a linear nitrosyl, the bent one being oriented towards the linear equatorial nitrosyl with an Ru-N-O angle of 133.88 (9)°. X-ray Fourier difference maps indicate a selectivity of the photo-isomerization process in PLI-1: only the bent NO ligand changes its position, while the linear NO is unaffected. After irradiation at 405 nm, the orientation is changed by rotation towards the Cl ligand opposite the linear NO, with an Ru-N-O angle in this new position of 109 (1)°. The photocrystallographic analysis provides evidence that, in the photo-induced metastable state, the bent NO group is attached to the Ru atom through the N atom (Ru-N-O), rather than in an isonitrosyl Ru-O-N binding mode. In the IR spectra, the asymmetric NO vibrational band shifts by -33 cm(-1) to a lower value, whereas the symmetric band splits and shifts by 5 cm(-1) to a higher value and by -8 cm(-1) to a lower value. The down shift is a clear indication of the structural change, and the small upward shift in response to the new electronic configuration of the metastable structure. Variable-temperature IR kinetic measurements in the range 80-114 K show that the decay of the PLI-1 state follows an Arrhenius behaviour with an activation energy of 0.22 eV.
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Affiliation(s)
- Nicolas Casaretto
- Université de Lorraine, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
- CNRS, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
| | - Sebastien Pillet
- Université de Lorraine, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
- CNRS, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
| | - El Eulmi Bendeif
- Université de Lorraine, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
- CNRS, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
| | - Dominik Schaniel
- Université de Lorraine, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
- CNRS, CRM2, UMR 7036, Vandoeuvre-les-Nancy, F-54506, France
| | - Anna K. E. Gallien
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstraße 5–13, 81377 Munich, Germany
| | - Peter Klüfers
- Department Chemie, Ludwig-Maximilians-Universität, Butenandtstraße 5–13, 81377 Munich, Germany
| | - Theo Woike
- Institut für Struturphysik, TU Dresden, Zellescher Weg 16, Dresden, Germany
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