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Peltier JL, Serrato MR, Thery V, Pecaut J, Tomás-Mendivil E, Bertrand G, Jazzar R, Martin D. An air-stable radical with a redox-chameleonic amide. Chem Commun (Camb) 2023; 59:595-598. [PMID: 36524847 DOI: 10.1039/d2cc05404c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An air-stable (amino)(amido)radical was synthesized by reacting a cyclic (alkyl)(amino)carbene with carbazoyl chloride, followed by one-electron reduction. We show that an adjacent radical center weakens the amide bond. It enables the amino group to act as a strong acceptor under steric contraint, thus enhancing the stabilizing capto-dative effect.
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Affiliation(s)
- Jesse L Peltier
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Melinda R Serrato
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Valentin Thery
- University Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.
| | - Jacques Pecaut
- University Grenoble Alpes, CEA, CNRS, INAC-SyMMES, UMR 5819, Grenoble 38000, France
| | | | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - David Martin
- University Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.
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Théry V, Molton F, Sirach S, Tillet N, Pécaut J, Tomás-Mendivil E, Martin D. The curious case of a sterically crowded Stenhouse salt. Chem Sci 2022; 13:9755-9760. [PMID: 36091895 PMCID: PMC9400627 DOI: 10.1039/d2sc01895k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/27/2022] [Indexed: 11/23/2022] Open
Abstract
We report a peculiar Stenhouse salt. It does not evolve into cyclopentenones upon basification, due to the steric hindrance of its bulky stable carbene patterns. This allowed for the observation and characterization of the transient open-chain neutral derivative, which was isolated as its cyclized form. The latter features an unusually long reactive C–O bond (150 pm) and a rich electrochemistry, including oxidation into an air-persistent radical cation. Bulky substituents of a Stenhouse salt prevent the usual formation of a cyclopentenone upon deprotonation. For the first time, a transient open-chain neutral derivative was observed; the cyclized form and an air-persistent radical were isolated.![]()
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Affiliation(s)
| | | | - Selim Sirach
- Univ. Grenoble Alpes, CNRS, DCM Grenoble 38000 France
| | - Neven Tillet
- Univ. Grenoble Alpes, CNRS, DCM Grenoble 38000 France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, INAC-SyMMES, UMR 5819 Grenoble 38000 France
| | | | - David Martin
- Univ. Grenoble Alpes, CNRS, DCM Grenoble 38000 France
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Gao J, Guo L, Wu Y, Cheng Y, Hu X, Liu J, Liu Z. 16-Electron Half-Sandwich Rhodium(III), Iridium(III), and Ruthenium(II) Complexes as Lysosome-Targeted Anticancer Agents. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jie Gao
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Lihua Guo
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Yuting Wu
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Yihan Cheng
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xueyan Hu
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Jinfeng Liu
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Zhe Liu
- Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
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Rafiee Samani Z, Mehranpour A. Synthesis of new allylidene amino phenol-containing Schiff bases and metal complex formation using trimethinium salts. RSC Adv 2021; 11:21695-21701. [PMID: 35478780 PMCID: PMC9034104 DOI: 10.1039/d1ra04214a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/14/2021] [Indexed: 02/03/2023] Open
Abstract
An efficient route for the synthesis of novel Schiff bases from the condensation reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with diverse aminophenols in the presence of triethylamine in EtOH at reflux is described. Complexes of transition metals with Schiff base ligand (L) 3c, having the donor atom set N2O2, were studied. The ultraviolet spectral behavior of the complexes in DMSO was investigated and the λmax of these compounds was examined. The structure of the new compounds was confirmed based on their spectral data from IR, 1H NMR and 13C NMR, mass spectra, and elemental analysis. An efficient route for the synthesis of novel Schiff bases from the condensation reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with diverse aminophenols in the presence of triethylamine in EtOH at reflux is described.![]()
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Affiliation(s)
- Ziba Rafiee Samani
- Department of Chemistry, Faculty of Sciences, Persian Gulf University Bushehr 75169 Iran
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Tomás‐Mendivil E, Devillard M, Regnier V, Pecaut J, Martin D. Air‐Stable Oxyallyl Patterns and a Switchable N‐Heterocyclic Carbene. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002669] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Marc Devillard
- Univ. Grenoble Alpes CNRS DCM 38000 Grenoble France
- Current address: Université de Rennes CNRS, ISCR, UMR6226 35042 Rennes France
| | | | - Jacques Pecaut
- Univ. Grenoble Alpes, CEA CNRS, INAC-SyMMES, UMR 5819 38000 Grenoble France
| | - David Martin
- Univ. Grenoble Alpes CNRS DCM 38000 Grenoble France
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Tomás-Mendivil E, Devillard M, Regnier V, Pecaut J, Martin D. Air-Stable Oxyallyl Patterns and a Switchable N-Heterocyclic Carbene. Angew Chem Int Ed Engl 2020; 59:11516-11520. [PMID: 32277582 DOI: 10.1002/anie.202002669] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/10/2020] [Indexed: 01/22/2023]
Abstract
Oxyallyl derivatives are typically elusive compounds. Even recently reported "stabilized" 1,3-diaminooxyallyl species are still highly reactive and have short lifetimes at room temperature. Herein, we report the synthesis and preliminary study of mesoionic pyrimidine derivatives that feature 1,3-bis(dimethylamino)oxyallyl patterns with an unprecedented level of stabilization. The latter are not only insensitive towards air and moisture, but they are also compatible with the formation of an ancillary stable N-heterocyclic carbene moiety. As the oxyallyl pattern is proton-responsive, it allows the reversible switching of the electronic properties of the carbene, as a ligand.
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Affiliation(s)
| | - Marc Devillard
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France.,Current address: Université de Rennes, CNRS, ISCR, UMR6226, 35042, Rennes, France
| | | | - Jacques Pecaut
- Univ. Grenoble Alpes, CEA, CNRS, INAC-SyMMES, UMR 5819, 38000, Grenoble, France
| | - David Martin
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
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Devillard M, Regnier V, Pecaut J, Martin D. Stable dicationic dioxoliums and fate of their dioxolyl radicals. Org Chem Front 2019. [DOI: 10.1039/c9qo00298g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A glimpse into uncharted territory: the synthesis and study of dicationic dioxolium salts allow for assessing the fate of the corresponding elusive dioxolyl radicals.
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Affiliation(s)
| | | | - Jacques Pecaut
- Univ. Grenoble Alpes
- CEA
- CNRS
- INAC-SyMMES
- UMR 5819 38000 Grenoble
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