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Bousfiha A, Abidi O, Lemetayer L, Sood N, Tolbatov I, Barrois F, Daher A, Cattey H, Cordier M, Hissler M, Hierso JC, Fleurat-Lessard P, Bouit PA, Roger J. Molecular engineering of 3-arylated tetrazo[1,2- b]indazoles: divergent synthesis and structure-property relationships. Dalton Trans 2024. [PMID: 38872593 DOI: 10.1039/d4dt01122h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The synthetic scope of 3-arylated tetrazo[1,2-b]indazoles is reported based on a Pd-catalyzed Liebeskind-Srogl cross-coupling reaction followed by an N-cyclisation process. The reactivity of the nitrogen atoms was used to further diversify these N-rich polyaromatic tetrazo[1,2-b]indazoles in a panel of reactions (protonation, selective oxidation, metallations). Selective ortho-C-H activation/functionalization on the heterocycle was also demonstrated with three transition metals (TM = Pd, Ir and Rh). The effects of all these molecular engineering strategies, particularly the N-modifications, on the optical and redox properties of the 3-arylated tetrazoindazoles were studied experimentally and theoretically. This study highlights the diversity of molecular structures and electronic properties offered by the tetrazo[1,2-b]indazole platform.
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Affiliation(s)
- Asmae Bousfiha
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Oumaima Abidi
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | | | - Navya Sood
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Iogann Tolbatov
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Fabien Barrois
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Ahmad Daher
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Hélène Cattey
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Marie Cordier
- CNRS, ISCR - UMR 6226, Univ. Rennes, 35000 Rennes, France.
| | - Muriel Hissler
- CNRS, ISCR - UMR 6226, Univ. Rennes, 35000 Rennes, France.
| | - Jean-Cyrille Hierso
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | - Paul Fleurat-Lessard
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
| | | | - Julien Roger
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 - Université Bourgogne (UB), 9, Avenue Alain Savary, 21078 Dijon, France.
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Ludwig P, Rominger F, Freudenberg J, Bunz UHF. Stabilization of Acenes: "Geländer"-Pentacenes. Angew Chem Int Ed Engl 2024; 63:e202316902. [PMID: 38180106 DOI: 10.1002/anie.202316902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/20/2023] [Accepted: 01/03/2024] [Indexed: 01/06/2024]
Abstract
We report soluble tetrakis-biphenylyl substituted pentacenes comprised of sp2 carbons and synthesized from pentacene-5,7,12,14-tetraone. Intramolecular Yamamoto coupling of two tetrakis(chlorobiphenylyl)pentacenes yields helical, doubly wrapped pentacenes, in which the quaterphenylene units solubilize the pentacenes and shield their central anthracene units to an unprecedented degree. The criss-cross-bridged pentacenes resist (photo)oxidation, Diels-Alder reactions and are much less reactive than TIPS-ethynylated pentacene. Extension of this concept might provide access to the larger acenes.
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Affiliation(s)
- Philipp Ludwig
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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Li J, Sun X, Dmitrieva E, Israel N, Wu F, Yang L, Liu R, Feng X, Plietker B. Tosylazide as N1-Synthon: Iron-Catalyzed Nitrogenative Dimerization of Indoles to p-Bisindolopyrazine Derivatives. Org Lett 2024; 26:1046-1050. [PMID: 38294841 DOI: 10.1021/acs.orglett.3c04209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
We present a straightforward one-step process to access a range of novel p-diindolepyrazines via an unprecedented [n-Bu4N][Fe(CO)3(NO)] (TBA[Fe])-catalyzed intermolecular nitrogenative dimerization of various indole derivatives. Remarkably, tosylazide functions as a N1-synthon forming the central pyrazine unit that joins the two indole subunits. The catalytic transformation shows a good substrate scope, and the obtained products show interesting electronic properties.
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Affiliation(s)
- Jianan Li
- Chair of Organic Chemistry I, Faculty of Chemistry and Food Chemistry, TU Dresden, Bergstraße 66, DE-01069 Dresden, Germany
| | - Xiaohan Sun
- Chair of Organic Chemistry I, Faculty of Chemistry and Food Chemistry, TU Dresden, Bergstraße 66, DE-01069 Dresden, Germany
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research, DE-01069 Dresden, Germany
| | - Noel Israel
- Leibniz Institute for Solid State and Materials Research, DE-01069 Dresden, Germany
| | - Fupeng Wu
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, TU Dresden, Mommsenstrasse 4, DE-01062 Dresden, Germany
- Max Planck Institute of Microstructure Physics Weinberg 2, 06120 Halle, Germany
| | - Lin Yang
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, TU Dresden, Mommsenstrasse 4, DE-01062 Dresden, Germany
| | - Renxiang Liu
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, TU Dresden, Mommsenstrasse 4, DE-01062 Dresden, Germany
| | - Xinliang Feng
- Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, TU Dresden, Mommsenstrasse 4, DE-01062 Dresden, Germany
- Max Planck Institute of Microstructure Physics Weinberg 2, 06120 Halle, Germany
| | - Bernd Plietker
- Chair of Organic Chemistry I, Faculty of Chemistry and Food Chemistry, TU Dresden, Bergstraße 66, DE-01069 Dresden, Germany
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Li J, Lao J, Zou H. Aza-dicyclopenta[ a, g]naphthalenes: controllable seesaw-like emissive behavior and narrowband AIEgens. Chem Sci 2023; 14:11203-11212. [PMID: 37860664 PMCID: PMC10583707 DOI: 10.1039/d3sc03921h] [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: 07/28/2023] [Accepted: 09/25/2023] [Indexed: 10/21/2023] Open
Abstract
Molecular motions significantly influence the emissive behavior and properties of organic fluorescent molecules. However, achieving controllable emission remains a major challenge for fluorophores. In the case of aggregation-induced emission luminogens (AIEgens), the desired properties of aggregated emission and narrowband spectrum demand molecular motion patterns that inherently oppose each other. A nitrogen-containing dicyclopenta[a,g]naphthalene scaffold was discovered as a controllable luminogenic structure through a highly efficient one-step intermolecular cascade reaction. By carefully balancing molecular motions and introducing additional nitrogen atoms into the skeleton, pyrrole-conjugated dicyclopenta[a,g]naphthalenes with aggregation-caused quenching (ACQ) could be transformed into dual-state emission luminogens (DSEgens). This transformation was achieved by incorporating an additional weak H-bond "lock." Furthermore, the DSEgens could be converted into AIEgens with an exciting narrow full-width-at-half-maximum (FWHM, <50 nm) by methylation. This unprecedented discovery is attributed to the contribution of the weak H-bond "lock," which overcomes the limitations of broad band emission in AIEgens caused by restrictions of intramolecular motion. Specific organelle probes were developed by replacing the methyl group of the onium product with different positioning groups. This study emphasizes the delicate balance of molecular motions in controlling luminescence and demonstrates a successful approach to designing organic luminogens with controllable emission and narrowband AIEgens.
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Affiliation(s)
- Jinbiao Li
- College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 P. R. China
| | - Jiaxin Lao
- College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 P. R. China
| | - Hongbin Zou
- College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 P. R. China
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