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Lai ND, Nguyen TT, Nguyen NNH, Retailleau P, Mac HD, Nguyen TB. Direct Access to 2-Aryl-3-Cyanothiophenes by Base-Catalyzed One-pot Two-step Three-component Reaction of Chalcones with Benzoylacetonitriles and Elemental Sulfur. Org Chem Front 2022. [DOI: 10.1039/d2qo00526c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3-Cyanothiophene is an important heterocyclic scaffold in bioorganic and medicinal chemistry as a useful synthetic intermediate as well as in material sciences as a privilege motif for photovoltaic development. Herein,...
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Savitha G, Moussallem C, Allain M, Gohier F, Frère P. Low Band Gap Donor-Acceptor Conjugated Systems Based on 3-Alkoxy or 3-Pyrrolidino-4-cyanothiophene and Benzothiadiazole Units. Chem Asian J 2017; 12:1935-1943. [PMID: 28488416 DOI: 10.1002/asia.201700545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/07/2017] [Indexed: 11/07/2022]
Abstract
3-Hexyloxy-4-cyanothiophene, 3-pyrrolidil-4-cyanothiophene, and 3,4-ethylenedioxythiophene (EDOT) units are used with benzothiadiazole as building blocks for the development of three new conjugated donor-acceptor-donor (DAD) derivatives. The DAD molecules have the central acceptor part, which is formed by combining electron-withdrawing cyano groups and the benzothiadiazole moiety, in common. Theoretical calculations and UV/Vis and electrochemical data reveal the key role of the end-capped donor to tune the electronic properties of the derivatives. A study of the electropolymerization process of the three derivatives shows the strong influence of the donor parts on both the reactivity of the precursors and the electronic properties of the resulting polymers. Derivatives end-capped with pyrrolidinocyano thiophene or EDOT units lead to films of polymers presenting low band gaps of around 0.9-1.4 eV. Upon oxidation, the two polymers present different behavior. In the presence of the pyrrolidinocyano thiophene moieties, oxidation leads to a blueshift of the absorption bands, whereas with EDOT units a classical redshift, giving high absorption in the near-IR region, is observed for the oxidized states.
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Affiliation(s)
- Gurunathan Savitha
- Université d'Angers, MOLTECH-Anjou, UMR CNRS 6200, 2 Bd Lavoisier, 49045, Angers, France.,Department of Chemistry, Indian Institute of Technology Madras, 600036, Chennai, Taminaldu (India
| | - Chady Moussallem
- Université d'Angers, MOLTECH-Anjou, UMR CNRS 6200, 2 Bd Lavoisier, 49045, Angers, France.,Centre AZM pour la recherche en biotechnologie et applications, Université Libanaise, Laboratoire EDST, Tripoli, Lebanon
| | - Magali Allain
- Université d'Angers, MOLTECH-Anjou, UMR CNRS 6200, 2 Bd Lavoisier, 49045, Angers, France
| | - Frédéric Gohier
- Université d'Angers, MOLTECH-Anjou, UMR CNRS 6200, 2 Bd Lavoisier, 49045, Angers, France
| | - Pierre Frère
- Université d'Angers, MOLTECH-Anjou, UMR CNRS 6200, 2 Bd Lavoisier, 49045, Angers, France
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Nitti A, Bianchi G, Po R, Swager TM, Pasini D. Domino Direct Arylation and Cross-Aldol for Rapid Construction of Extended Polycyclic π-Scaffolds. J Am Chem Soc 2017. [PMID: 28621529 DOI: 10.1021/jacs.7b03412] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Andrea Nitti
- Department
of Chemistry and INSTM Research Unit, University of Pavia, Viale Taramelli
10, 27100 Pavia, Italy
| | - Gabriele Bianchi
- Research
Center for Renewable Energies and Environment - Institute Eni Donegani, Eni Spa, Via Fauser 4, 28100 Novara, Italy
| | - Riccardo Po
- Research
Center for Renewable Energies and Environment - Institute Eni Donegani, Eni Spa, Via Fauser 4, 28100 Novara, Italy
| | - Timothy M. Swager
- Department
of Chemistry, Massachusetts Institute of Technology, Cambridge 02139, United States
| | - Dario Pasini
- Department
of Chemistry and INSTM Research Unit, University of Pavia, Viale Taramelli
10, 27100 Pavia, Italy
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Faurie A, Grolleau J, Gohier F, Allain M, Legoupy S, Frère P. Toward Sustainable Organic Semiconductors from a Broad Palette of Green Reactions. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700317] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alexandre Faurie
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Jérémie Grolleau
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Frédéric Gohier
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Magali Allain
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Stéphanie Legoupy
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Pierre Frère
- MOLTECH-Anjou; Université d'Angers; 2 Boulevard Lavoisier 49045 Angers Cedex France
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