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Postils V, Burešová Z, Casanova D, Champagne B, Bureš F, Rodriguez V, Castet F. Second-order nonlinear optical properties of X-shaped pyrazine derivatives. Phys Chem Chem Phys 2024; 26:1709-1721. [PMID: 38131670 DOI: 10.1039/d3cp04516a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
This work reports an investigation of the second-order NLO properties of two isomer series of X-shaped pyrazine derivatives, by means of HRS measurements and DFT calculations. The systems differ in the relative position of the donor and acceptor substituents with respect to the axis formed by the nitrogen atoms of the central pyrazine ring. Although the magnitude of the second harmonic signal is similar, HRS measurements revealed that the anisotropy of the NLO response strongly differs in the two chromophore series, the one of the 2,3-isomers being strikingly dipolar, while the one of the 2,6-isomers is mostly octupolar. The experimental observations are well supported by DFT calculations. In particular, the sum-over-states approach allows us to rationalize the different NLO anisotropies observed in the two isomer series through a detailed analysis of the symmetry of the low-lying excited states.
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Affiliation(s)
- Verònica Postils
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
| | - Zuzana Burešová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - David Casanova
- Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea 4, 20018 Donostia, Euskadi, Spain
- Ikerbasque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Euskadi, Spain
| | - Benoît Champagne
- Unité de Chimie Physique Théorique et Structurale, Chemistry Department, Namur Institute of Structured Matter, University of Namur, Belgium
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - Vincent Rodriguez
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
| | - Frédéric Castet
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
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Burešová Z, Jandová V, Klikar M, Grygarová M, Bureš F. Construction of bi(hetero)aryls via dicyanopyrazine-mediated photochemical cross-coupling. Org Biomol Chem 2022; 20:9378-9384. [PMID: 36385305 DOI: 10.1039/d2ob01836e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A photochemical cross-coupling protocol towards bi(hetero)aryls has been developed. The coupling reactions were mediated by dicyanopyrazine photoredox catalyst, while a photoinduced disproportionation process has been identified as an accompanying mechanism, especially for pyrrole derivatives. The developed method allows the cross-coupling of five-membered rings such as pyrrole, imidazole, thiazole and oxazole as well as various diazines (pyridine and pyrimidine) and benzene derivatives. A plausible mechanism of the reaction has also been disclosed. The practical application and relevance of the developed method were demonstrated by constructing an atorvastatin core or by the gradual functionalization of benzo[c][1,2,5]thiadiazole. In total, twenty-one bi(hetero)aryls were prepared in yields ranging from 19 to 95%.
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Affiliation(s)
- Zuzana Burešová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
| | - Veronika Jandová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
| | - Milan Klikar
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
| | - Monika Grygarová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
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3
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Recent advances of visible-light photocatalysis in the functionalization of organic compounds. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100488] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Runemark A, Sundén H. Aerobic Oxidative EDA Catalysis: Synthesis of Tetrahydroquinolines Using an Organocatalytic EDA Active Acceptor. J Org Chem 2022; 87:1457-1469. [PMID: 35005960 PMCID: PMC8790759 DOI: 10.1021/acs.joc.1c02776] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 12/17/2022]
Abstract
A catalytic electron donor-acceptor (EDA) complex for the visible-light-driven annulation reaction between activated alkenes and N,N-substituted dialkyl anilines is reported. The key photoactive complex is formed in situ between dialkylated anilines as donors and 1,2-dibenzoylethylene as a catalytic acceptor. The catalytic acceptor is regenerated by aerobic oxidation. Investigations into the mechanism are provided, revealing a rare example of a catalytic acceptor in photoactive EDA complexes that can give access to selective functionalization of aromatic amines under mild photochemical conditions.
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Affiliation(s)
- August Runemark
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden
| | - Henrik Sundén
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden
- Chemistry
and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg, Sweden
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Wu W, Wang H, Chen J, Bao X, Tan C, Ye X. Dicyanopyrazine‐derived Chromophore as An Efficient Photocatalyst for α‐amino C‐H Bond Functionalization. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wentao Wu
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Jun Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
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Schwärzer K, Rout SK, Bessinger D, Lima F, Brocklehurst CE, Karaghiosoff K, Bein T, Knochel P. Selective functionalization of the 1 H-imidazo[1,2- b]pyrazole scaffold. A new potential non-classical isostere of indole and a precursor of push-pull dyes. Chem Sci 2021; 12:12993-13000. [PMID: 34745530 PMCID: PMC8513920 DOI: 10.1039/d1sc04155j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 08/28/2021] [Indexed: 12/28/2022] Open
Abstract
We report the selective functionalization of the 1H-imidazo[1,2-b]pyrazole scaffold using a Br/Mg-exchange, as well as regioselective magnesiations and zincations with TMP-bases (TMP = 2,2,6,6-tetramethylpiperidyl), followed by trapping reactions with various electrophiles. In addition, we report a fragmentation of the pyrazole ring, giving access to push-pull dyes with a proaromatic (1,3-dihydro-2H-imidazol-2-ylidene)malononitrile core. These functionalization methods were used in the synthesis of an isostere of the indolyl drug pruvanserin. Comparative assays between the original drug and the isostere showed that a substitution of the indole ring with a 1H-imidazo[1,2-b]pyrazole results in a significantly improved solubility in aqueous media.
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Affiliation(s)
- Kuno Schwärzer
- Department Chemie, Ludwig-Maximilians-Universität München Munich 81377 Germany
| | - Saroj K Rout
- Department Chemie, Ludwig-Maximilians-Universität München Munich 81377 Germany
| | - Derya Bessinger
- Department Chemie, Ludwig-Maximilians-Universität München Munich 81377 Germany
| | - Fabio Lima
- Global Discovery Chemistry, Novartis Institutes of BioMedical Research Basel 4057 Switzerland
| | - Cara E Brocklehurst
- Global Discovery Chemistry, Novartis Institutes of BioMedical Research Basel 4057 Switzerland
| | | | - Thomas Bein
- Department Chemie, Ludwig-Maximilians-Universität München Munich 81377 Germany
| | - Paul Knochel
- Department Chemie, Ludwig-Maximilians-Universität München Munich 81377 Germany
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Kulhánek J, Pytela O, Bureš F, Klikar M. Small Heterocyclic D‐π‐D‐π‐A Push‐Pull Molecules with Complex Electron Donors. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiří Kulhánek
- Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Oldřich Pytela
- Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Filip Bureš
- Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice Studentská 573 Pardubice 53210 Czech Republic
| | - Milan Klikar
- Institute of Organic Chemistry and Technology Faculty of Chemical Technology University of Pardubice Studentská 573 Pardubice 53210 Czech Republic
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8
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Itoh K, Nagao SI, Tokunaga K, Hirayama S, Karaki F, Mizuguchi T, Nagai K, Sato N, Suzuki M, Hashimoto M, Fujii H. Visible-Light-Induced Synthesis of 1,2,3,4-Tetrahydroquinolines through Formal [4+2] Cycloaddition of Acyclic α,β-Unsaturated Amides and Imides with N,N-Dialkylanilines. Chemistry 2021; 27:5171-5179. [PMID: 33300620 DOI: 10.1002/chem.202004186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/05/2020] [Indexed: 01/01/2023]
Abstract
1,2,3,4-Tetrahydroquinolines should be applicable to the development of new pharmaceutical agents. A facile synthesis of 1,2,3,4-tetrahydroquinolines that is achieved by a photoinduced formal [4+2] cycloaddition reaction of acyclic α,β-unsaturated amides and imides with N,N-dialkylanilines under visible-light irradiation, in which a new IrIII complex photosensitizer, a thiourea, and an oxidant act cooperatively in promoting the reaction, is reported. The photoreaction enables the synthesis of a wide variety of 1,2,3,4-tetrahydroquinolines, while controlling the trans/cis diastereoselectivity (>99:1) and constructing contiguous stereogenic centers. A chemoselective cleavage of an acyclic imide auxiliary is demonstrated.
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Affiliation(s)
- Kennosuke Itoh
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Shun-Ichi Nagao
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Ken Tokunaga
- Division of Liberal Arts, Center for Promotion of Higher Education, Kogakuin University, Tokyo, 192-0015, Japan
| | - Shigeto Hirayama
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Fumika Karaki
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Takaaki Mizuguchi
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Kenichiro Nagai
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Noriko Sato
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
| | - Mitsuaki Suzuki
- Department of Chemistry, Faculty of Science, Josai University, Saitama, 350-0295, Japan
| | - Masashi Hashimoto
- Department of Chemistry, Faculty of Science, Josai University, Saitama, 350-0295, Japan
| | - Hideaki Fujii
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, 108-8641, Japan
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