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Liashuk OS, Grygorenko OO, Volovenko YM, Waser J. Photochemical [2+2] Cycloaddition of Alkynyl Boronates. Chemistry 2023; 29:e202301650. [PMID: 37394686 DOI: 10.1002/chem.202301650] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/30/2023] [Accepted: 06/30/2023] [Indexed: 07/04/2023]
Abstract
A photochemical [2+2] cycloaddition of alkynyl boronates and maleimides is reported. The developed protocol provided 35-70 % yield of maleimide-derived cyclobutenyl boronates and demonstrated wide compatibility with various functional groups. The synthetic utility of the prepared building blocks was demonstrated for a range of transformations, including Suzuki cross-coupling, catalytic or metal-hydride reduction, oxidation, and cycloaddition reactions. With aryl-substituted alkynyl boronates, the products of double [2+2] cycloaddition were obtained predominantly. Using the developed protocol, a cyclobutene-derived analogue of Thalidomide was prepared in one step. Mechanistic studies supported the participation of the triplet-excited state maleimides and ground state alkynyl boronates in the key step of the process.
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Affiliation(s)
- Oleksandr S Liashuk
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
- Enamine Ltd., Kyiv, Winston Churchill Street 78, 02094, Kyїv, Ukraine
| | - Oleksandr O Grygorenko
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
- Enamine Ltd., Kyiv, Winston Churchill Street 78, 02094, Kyїv, Ukraine
| | - Yulian M Volovenko
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
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Wessig P, Lehmann M. [1,3]-Dioxolo[4,5-f]benzodioxole (DBD) Fluorescent Dyes; Synthesis, Properties, and Applications. SYNTHESIS-STUTTGART 2023. [DOI: 10.1055/s-0042-1751428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
AbstractIn this review we give an overview of the syntheses and photophysical properties of the new class of fluorescent dyes based on a [1,3]-dioxolo[4,5-f]benzodioxole core and their derivatives. Starting from commercially available reactants (e.g., sesamol, 1,2,4,5-tetrachlorobenzene) the core units can be prepared in a simple manner. Then, the benzene core can be derivatized via lithiation and their photophysical properties can be adjusted as desired. The obtained fluorophores have an absorption range of 403–520 nm and an emission range of 495–665 nm. This class of fluorescent dyes is also characterized by a long fluorescence lifetime, a high stability towards photobleaching, large Stokes shifts, and small size. Thus, the DBD dyes are optimally suited for optical sensing.1 Introduction2 Synthesis3 Properties4 Applications
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Novaes LFT, Wang Y, Liu J, Riart-Ferrer X, Cindy Lee WC, Fu N, Ho JSK, Zhang XP, Lin S. Electrochemical Diazidation of Alkenes Catalyzed by Manganese Porphyrin Complexes with Second-Sphere Hydrogen-Bond Donors. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05186] [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)
- Luiz F. T. Novaes
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Yi Wang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jinjian Liu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xavier Riart-Ferrer
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Wan-Chen Cindy Lee
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Niankai Fu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Justin S. K. Ho
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - X. Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Song Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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Golcs Á, Ádám BÁ, Vezse P, Huszthy P, Tóth T. Synthesis and Spectrophotometric Studies of 9‐Substituted‐4,5‐dimethoxyacridine Multifunctionalizable Fluorescent Dyes and Their Macrocyclic Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Bálint Árpád Ádám
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Panna Vezse
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Péter Huszthy
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Tünde Tóth
- Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
- Institute for Energy Security and Environmental Safety Centre for Energy Research Konkoly-Thege Miklós út 29–33 1121 Budapest Hungary
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Wessig P, John L, Sperlich E, Kelling A. Sulfur Tuning of [1,3]‐Dioxolo[4.5‐
f
]benzodioxole (DBD) Fluorescent Dyes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pablo Wessig
- Institut für Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany E-mail: ag-wessig.chem.uni-potsdam.de
| | - Leonard John
- Institut für Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany E-mail: ag-wessig.chem.uni-potsdam.de
| | - Eric Sperlich
- Institut für Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany E-mail: ag-wessig.chem.uni-potsdam.de
| | - Alexandra Kelling
- Institut für Chemie Universität Potsdam Karl-Liebknecht-Str. 24–25 14476 Potsdam Germany E-mail: ag-wessig.chem.uni-potsdam.de
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Kopp K, Schiemann O, Fleck N. Improved, Odorless Access to Benzo[1,2-d;4,5-d']- bis[1,3]dithioles and Tert-butyl Arylsulfides via C-S Cross Coupling. Molecules 2020; 25:molecules25163666. [PMID: 32806560 PMCID: PMC7464442 DOI: 10.3390/molecules25163666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 11/26/2022] Open
Abstract
Benzo[1,2-d;4,5-d′]bis[1,3]dithioles are important building blocks within a range of functional materials such as fluorescent dyes, conjugated polymers, and stable trityl radicals. Access to these is usually gained via tert-butyl aryl sulfides, the synthesis of which requires the use of highly malodorous tert-butyl thiol and relies on SNAr-chemistry requiring harsh reaction conditions, while giving low yields. In the present work, S-tert-butyl isothiouronium bromide is successfully applied as an odorless surrogate for tert-butyl thiol. The C-S bond formation is carried out under palladium catalysis with the thiolate formed in situ resulting in high yields of tert-butyl aryl sulfides. The subsequent formation of benzo[1,2-d;4,5-d′]bis[1,3]dithioles is here achieved with scandium(III)triflate, a less harmful reagent than the usually used Lewis acids, e.g., boron trifluoride or tetrafluoroboric acid. This enables a convenient and environmentally more compliant access to high yields of benzo[1,2-d;4,5-d′]bis[1,3]dithioles.
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Haubitz T, John L, Freyse D, Wessig P, Kumke MU. Investigating the Sulfur "Twist" on the Photophysics of DBD Dyes. J Phys Chem A 2020; 124:4345-4353. [PMID: 32392418 DOI: 10.1021/acs.jpca.0c01880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The so-called DBD ([1,3]dioxolo[4,5-f][1,3]benzodioxole) dyes are a new class of fluorescent dyes, with tunable photophysical properties like absorption, fluorescence lifetime, and Stokes shift. With the development of sulfur based DBDs, this dye class is extended even further for possible applications in spectroscopy and microscopy. In this paper we are investigating the basic photophysical properties and their implications for future applications for S4-DBD as well as O4-DBD. On the basis of time-resolved laser fluorescence spectroscopy, transient absorption spectroscopy, and UV/vis-spectroscopy, we determined the rate constants of the radiative and nonradiative deactivation processes as well as the energy of respective electronic states involved in the electronic deactivation of S4-DBD and of O4-DBD. For S4-DBD we unraveled the triplet formation with intersystem crossing quantum yields of up to 80%. By TD-DFT calculations we estimated a triplet energy of around 13500-14700 cm-1 depending on the DBD dye and solvent. Through solvent dependent measurements, we found quadrupole moments in the range of 2 B.
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Affiliation(s)
- Toni Haubitz
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strase 24-25, D-14476 Potsdam, Germany
| | - Leonard John
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strase 24-25, D-14476 Potsdam, Germany
| | - Daniel Freyse
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strase 24-25, D-14476 Potsdam, Germany
| | - Pablo Wessig
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strase 24-25, D-14476 Potsdam, Germany
| | - Michael U Kumke
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Strase 24-25, D-14476 Potsdam, Germany
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